<DIV align=center><FONT face="Comic Sans MS"><FONT size=6><FONT color=#9acd32><IMG style="CURSOR: hand" onclick=smile(this.src); src="http://www.s-elhoda.com/smiles/smiles/46/heart%20(141).gif" border=0></FONT></FONT></FONT></DIV>
<DIV align=center><FONT face="Comic Sans MS" color=#9acd32 size=6></FONT>&nbsp;</DIV>
<DIV align=center><FONT face="Comic Sans MS"><FONT size=6><FONT color=#9acd32>الهـ حاسبه </FONT><FONT color=#ffc0cb>لمنتدى وردة الربيع ..</FONT></FONT><BR></DIV></FONT>
<SCRIPT language=LiveScript><!-- Hide the script from browsers which do not support it.

  // Global Variables
  var acc = 0;            // accumulator for calculations
  var oper = " ";         // the previous operation
  var startnum = true;    // is this a new number
  var decpoint = false;   // is there a decimal point
  var errorstate = false; // an error has occured so lock keys until "AC" is pressed

  // Global "Constants" (...)
  MAXLEN = 14;

  //
  // IsNumeric - returns true if a string is a valid numeric literal
  //
  function IsNumeric(num) {
    var idx = 0;
    var ch = "";
    var foundpoint = false;

    for (idx = 0; idx < num.length; idx++) {
      ch = num.substring(idx, idx +1 );
      if ((ch < "0") || (ch > "9")) {
        if ((ch == ".") && (!foundpoint)) {
          foundpoint = true;
          continue;
        } else {
          if ((ch == "-") && (idx == 0)) {
            continue;
          }
        }
        return false;
      }
    } // for idx

    return true;
  }

  //
  // ContainsChar - check if a string contains a certain char
  //
  function ContainsChar(str, ch) {
    var idx;

    for (idx = 0; idx < str.length; idx++) {
      if (str.substring(idx, idx + 1) == ch) {
        return true;
      }
    }   // for idx

    return false;
  }

  //
  // ContainsDecimalPoint - check if a number string contains a decimal point
  //
  function ContainsDecimalPoint(num) {
    return ContainsChar(num, ".");
  }

  //
  // DisplayChanged - the display was explicitly changed, so check if it is valid
  //
  function DisplayChanged(form, display) {
    if (!errorstate) {
      if (IsNumeric(display.value)) {
       display.defaultValue = display.value;
        startnum = false;
        decpoint = ContainsDecimalPoint(display.value);
      } else {
        alert("You must enter a numeric value here.");
        display.value = display.defaultValue;
      }
    } else {   // errorstate
      alert('An error has occured. Press the "AC" button.');
    }
  }

  //
  // NumPressed - a digit button was pressed, add it to the current display
  //
  function NumPressed(form, digit) {
    if (!errorstate) {
      if ((digit !=0) || (form.display.value != "0")) {
        if (startnum) {   // need to put a new number on the display (e.g. after "=")
          form.display.value = eval(digit);
        } else {
          if (form.display.value.length < MAXLEN) {
            form.display.value = form.display.value + digit;
          }   // enough room to put new digit
        }   // add the digit

        startnum = false;
        form.display.defaultValue = form.display.value;
      }   // not trying to add leading zeros
    } else {   //errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // ChangeSign - "+/-" button was pressed, change sign of current display
  //
  function ChangeSign(form) {
    if (!errorstate) {
      if (form.display.value != "0") {
        if (eval(form.display.value) < 0) {   // negative no problem
          form.display.value = 0 - eval(form.display.value);
        } else {   // positive, make sure it's not too long
          if (form.display.value.length < MAXLEN)
            form.display.value = 0 - eval(form.display.value);
        }   // positive

        form.display.defaultValue = form.display.value;
        startnum = false;
      }   // not 0, can be negated
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // PointPressed - the decimal dot was pressed, add it to number and start putting disits after it
  //
  function PointPressed(form) {
    if (!errorstate) {
      if ((!decpoint) && (form.display.value.length < MAXLEN - 1)) {
        form.display.value = form.display.value + ".";
        form.display.defaultValue = form.display.value;
        decpoint = true;
        startnum = false;
      }   // decimal point not already present
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // ClearAll - "AC" button was pressed, restart the calculator
  //
  function ClearAll(display) {
    display.value = "0";
    display.defaultValue = "0";
    decpoint = false;
    acc = 0;
    oper = " ";
    startnum = true;
    errorstate = false;
  }

  //
  // ClearNum - "C" button was pressed, clear only current number on display
  //
  function ClearNum(display) {
    if (!errorstate) {
      display.value = "0";
      display.defaultValue = "0";
      decpoint = false;
      startnum = true;
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // RemoveZeros - remove leading zeros after a decimal point from a number string
  //
  function RemoveZeros(num) {
    var idx;

    if (ContainsChar(num, ".")) {
      idx = num.length - 1;
      ch = num.substring(idx, idx + 1);
      while((idx > 0) && (ch == "0")) {
        idx--;
        ch = num.substring(idx, idx + 1);
      }
      num = num.substring(0, idx + 1);

      // get rid of a trailing decimal point, if it remained hanging after the torture ...
      if (num.substring(num.length - 1, num.length) == ".") {
        num = num.substring(0, num.length - 1)
      }
    }   // num contains a decimal point

    return num;
  }

  //
  // CalcDisplay - calculate the new display using the accumulator and the previous operator
  //
  function CalcDisplay(display) {
    if (oper == "+") {
      display.value = acc + eval(display.value);
    } else if (oper == "-") {
      display.value = acc - eval(display.value);
    } else if (oper == "*") {
      display.value = acc * eval(display.value);
    } else if (oper == "/") {
      if (display.value == "0") {
        display.value = "ERROR !"
        errorstate = true;
      } else { 
        display.value = acc / eval(display.value);
      }
    }

    if (!errorstate) {
      if ((eval(display.value) >= eval("1e" + MAXLEN)) || (eval(display.value) <= eval("-1e" + (MAXLEN - 1)))) {
        display.value = "ERROR !";
        errorstate = true;
      } else {
        if (!ContainsChar(display.value, "e")) {   // not exponential format
           if (display.value.length > MAXLEN) {
            // number is in permited range, so extra digits are after decimal point
            // truncate extra digits
            display.value = display.value.substring(0, MAXLEN);
            // get rid of a hanging decimal point
            if (display.value.substring(MAXLEN - 1, MAXLEN) == ".") {
              display.value = display.value.substring(0, MAXLEN - 1);
            } else {
              // get rid of trailing zeros
              display.value = RemoveZeros(display.value);
            }
          }   // string too long
        } else {   // exponential format
          // Numbers smaller than 0.00001 are represented in exponential notation by the browser.
          // A piece of code to translate them to fix notation should be put here.
          // This is getting *much* too boring for me, so I leave it as is.
          // If anyone has the will power to write it, I'll be glad to include it ...
        }   // exponential format
      }   // not too high or low
    }   // no error yet (division by zero)
    display.defaultValue = display.value;
  }

  //
  // OperPressed - calculate the new display and move it to the accumulator
  //
  function OperPressed(form, newoper) {
    if (!errorstate) {
      CalcDisplay(form.display);
      oper = newoper;
      acc = eval(form.display.value);
      startnum = true;
      decpoint = false;
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // CalcResult - the "=" button was pressed, put result on display
  //
  function CalcResult(form) {
    if (!errorstate) {
      CalcDisplay(form.display);
      oper = " ";
      acc = 0;
      startnum = true;
      decpoint = false;
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

// End of hiding script from browsers which do not support it. --></SCRIPT>

<DIV align=center></DIV>
<P align=center>
<FORM action="" method=post></P>
<SCRIPT language=LiveScript><!-- Hide the script from browsers which do not support it.

  // Global Variables
  var acc = 0;            // accumulator for calculations
  var oper = " ";         // the previous operation
  var startnum = true;    // is this a new number
  var decpoint = false;   // is there a decimal point
  var errorstate = false; // an error has occured so lock keys until "AC" is pressed

  // Global "Constants" (...)
  MAXLEN = 14;

  //
  // IsNumeric - returns true if a string is a valid numeric literal
  //
  function IsNumeric(num) {
    var idx = 0;
    var ch = "";
    var foundpoint = false;

    for (idx = 0; idx < num.length; idx++) {
      ch = num.substring(idx, idx +1 );
      if ((ch < "0") || (ch > "9")) {
        if ((ch == ".") && (!foundpoint)) {
          foundpoint = true;
          continue;
        } else {
          if ((ch == "-") && (idx == 0)) {
            continue;
          }
        }
        return false;
      }
    } // for idx

    return true;
  }

  //
  // ContainsChar - check if a string contains a certain char
  //
  function ContainsChar(str, ch) {
    var idx;

    for (idx = 0; idx < str.length; idx++) {
      if (str.substring(idx, idx + 1) == ch) {
        return true;
      }
    }   // for idx

    return false;
  }

  //
  // ContainsDecimalPoint - check if a number string contains a decimal point
  //
  function ContainsDecimalPoint(num) {
    return ContainsChar(num, ".");
  }

  //
  // DisplayChanged - the display was explicitly changed, so check if it is valid
  //
  function DisplayChanged(form, display) {
    if (!errorstate) {
      if (IsNumeric(display.value)) {
       display.defaultValue = display.value;
        startnum = false;
        decpoint = ContainsDecimalPoint(display.value);
      } else {
        alert("You must enter a numeric value here.");
        display.value = display.defaultValue;
      }
    } else {   // errorstate
      alert('An error has occured. Press the "AC" button.');
    }
  }

  //
  // NumPressed - a digit button was pressed, add it to the current display
  //
  function NumPressed(form, digit) {
    if (!errorstate) {
      if ((digit !=0) || (form.display.value != "0")) {
        if (startnum) {   // need to put a new number on the display (e.g. after "=")
          form.display.value = eval(digit);
        } else {
          if (form.display.value.length < MAXLEN) {
            form.display.value = form.display.value + digit;
          }   // enough room to put new digit
        }   // add the digit

        startnum = false;
        form.display.defaultValue = form.display.value;
      }   // not trying to add leading zeros
    } else {   //errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // ChangeSign - "+/-" button was pressed, change sign of current display
  //
  function ChangeSign(form) {
    if (!errorstate) {
      if (form.display.value != "0") {
        if (eval(form.display.value) < 0) {   // negative no problem
          form.display.value = 0 - eval(form.display.value);
        } else {   // positive, make sure it's not too long
          if (form.display.value.length < MAXLEN)
            form.display.value = 0 - eval(form.display.value);
        }   // positive

        form.display.defaultValue = form.display.value;
        startnum = false;
      }   // not 0, can be negated
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // PointPressed - the decimal dot was pressed, add it to number and start putting disits after it
  //
  function PointPressed(form) {
    if (!errorstate) {
      if ((!decpoint) && (form.display.value.length < MAXLEN - 1)) {
        form.display.value = form.display.value + ".";
        form.display.defaultValue = form.display.value;
        decpoint = true;
        startnum = false;
      }   // decimal point not already present
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // ClearAll - "AC" button was pressed, restart the calculator
  //
  function ClearAll(display) {
    display.value = "0";
    display.defaultValue = "0";
    decpoint = false;
    acc = 0;
    oper = " ";
    startnum = true;
    errorstate = false;
  }

  //
  // ClearNum - "C" button was pressed, clear only current number on display
  //
  function ClearNum(display) {
    if (!errorstate) {
      display.value = "0";
      display.defaultValue = "0";
      decpoint = false;
      startnum = true;
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // RemoveZeros - remove leading zeros after a decimal point from a number string
  //
  function RemoveZeros(num) {
    var idx;

    if (ContainsChar(num, ".")) {
      idx = num.length - 1;
      ch = num.substring(idx, idx + 1);
      while((idx > 0) && (ch == "0")) {
        idx--;
        ch = num.substring(idx, idx + 1);
      }
      num = num.substring(0, idx + 1);

      // get rid of a trailing decimal point, if it remained hanging after the torture ...
      if (num.substring(num.length - 1, num.length) == ".") {
        num = num.substring(0, num.length - 1)
      }
    }   // num contains a decimal point

    return num;
  }

  //
  // CalcDisplay - calculate the new display using the accumulator and the previous operator
  //
  function CalcDisplay(display) {
    if (oper == "+") {
      display.value = acc + eval(display.value);
    } else if (oper == "-") {
      display.value = acc - eval(display.value);
    } else if (oper == "*") {
      display.value = acc * eval(display.value);
    } else if (oper == "/") {
      if (display.value == "0") {
        display.value = "ERROR !"
        errorstate = true;
      } else { 
        display.value = acc / eval(display.value);
      }
    }

    if (!errorstate) {
      if ((eval(display.value) >= eval("1e" + MAXLEN)) || (eval(display.value) <= eval("-1e" + (MAXLEN - 1)))) {
        display.value = "ERROR !";
        errorstate = true;
      } else {
        if (!ContainsChar(display.value, "e")) {   // not exponential format
           if (display.value.length > MAXLEN) {
            // number is in permited range, so extra digits are after decimal point
            // truncate extra digits
            display.value = display.value.substring(0, MAXLEN);
            // get rid of a hanging decimal point
            if (display.value.substring(MAXLEN - 1, MAXLEN) == ".") {
              display.value = display.value.substring(0, MAXLEN - 1);
            } else {
              // get rid of trailing zeros
              display.value = RemoveZeros(display.value);
            }
          }   // string too long
        } else {   // exponential format
          // Numbers smaller than 0.00001 are represented in exponential notation by the browser.
          // A piece of code to translate them to fix notation should be put here.
          // This is getting *much* too boring for me, so I leave it as is.
          // If anyone has the will power to write it, I'll be glad to include it ...
        }   // exponential format
      }   // not too high or low
    }   // no error yet (division by zero)
    display.defaultValue = display.value;
  }

  //
  // OperPressed - calculate the new display and move it to the accumulator
  //
  function OperPressed(form, newoper) {
    if (!errorstate) {
      CalcDisplay(form.display);
      oper = newoper;
      acc = eval(form.display.value);
      startnum = true;
      decpoint = false;
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

  //
  // CalcResult - the "=" button was pressed, put result on display
  //
  function CalcResult(form) {
    if (!errorstate) {
      CalcDisplay(form.display);
      oper = " ";
      acc = 0;
      startnum = true;
      decpoint = false;
    } else {   // errorstate
      alert('An error has occured. Please press the "AC" button');
    }
  }

// End of hiding script from browsers which do not support it. --></SCRIPT>

<P></P>
<P></FORM>
<FORM action="" method=post>
<P>
<TABLE style="WIDTH: 149px; HEIGHT: 266px" align=center border=2>
<TBODY>
<TR>
<TD>
<P><INPUT onchange="DisplayChanged(this.form, this.form.display)" size=15 value=0 name=display></P></TD></TR>
<TR>
<TD>
<P>
<TABLE align=center border=1>
<TBODY>
<TR>
<TD>
<P><INPUT onclick=history.go(-1) type=radio CHECKED value=value338414 name=radio></P></TD>
<TD>
<P></P></TD>
<TD>
<P><INPUT onclick=ClearNum(this.form.display) type=button value=" C " name=Button></P></TD>
<TD>
<P><INPUT onclick=ClearAll(this.form.display) type=button value=AC name=Button></P></TD></TR>
<TR>
<TD>
<P><INPUT onclick="NumPressed(this.form, 1)" type=button value=" 1 " name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 2)" type=button value=" 2 " name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 3)" type=button value=" 3 " name=Button></P></TD>
<TD>
<P><INPUT onclick='OperPressed(this.form, "+")' type=button value=" + " name=Button></P></TD></TR>
<TR>
<TD>
<P><INPUT onclick="NumPressed(this.form, 4)" type=button value=" 4 " name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 5)" type=button value=" 5 " name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 6)" type=button value=" 6 " name=Button></P></TD>
<TD>
<P><INPUT onclick='OperPressed(this.form, "-")' type=button value="  - " name=Button></P></TD></TR>
<TR>
<TD>
<P><INPUT onclick="NumPressed(this.form, 7)" type=button value=" 7 " name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 8)" type=button value=" 8 " name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 9)" type=button value=" 9 " name=Button></P></TD>
<TD>
<P><INPUT onclick='OperPressed(this.form, "*")' type=button value=" X " name=Button></P></TD></TR>
<TR>
<TD>
<P><INPUT onclick=ChangeSign(this.form) type=button value=+/- name=Button></P></TD>
<TD>
<P><INPUT onclick="NumPressed(this.form, 0)" type=button value=" 0 " name=Button></P></TD>
<TD>
<P><INPUT onclick=PointPressed(this.form) type=button value="  . " name=Button></P></TD>
<TD>
<P><INPUT onclick='OperPressed(this.form, "/")' type=button value="  / " name=Button></P></TD></TR>
<TR>
<TD colSpan=4>
<P align=center><INPUT onclick=CalcResult(this.form) type=button value="   =   " name=Button></P>
<P>
<SCRIPT language=LiveScript><!-- Hide the script from browsers which do not support it.
  document.forms[0].display.value = "0";
  document.forms[0].display.value = document.forms[0].display.defaultValue;
// End of hiding script from browsers which do not support it. --></SCRIPT>

<SCRIPT language=LiveScript><!-- Hide the script from browsers which do not support it.
  document.forms[0].display.value = "0";
  document.forms[0].display.value = document.forms[0].display.defaultValue;
// End of hiding script from browsers which do not support it. --></SCRIPT>
</P></TD></TR></TBODY>
<P></P></TR></TBODY>
<P></P></FORM>
<FORM action="" method=post>
<P></P></TR></TBODY></TABLE>
<DIV align=center>&nbsp;</DIV></FORM></TD></TR></TBODY></TABLE>
<P>
<DIV align=center>&nbsp;</DIV>
<DIV align=center>&nbsp;</DIV>
<DIV align=center>&nbsp;</DIV>
<DIV align=center><STRONG><FONT style="BACKGROUND-COLOR: white" face=Tahoma color=pink>الحقوق محفوظة لدى<FONT color=yellowgreen>.منتديات وردة الربيع</FONT></FONT></STRONG></DIV>
<DIV align=center><STRONG><FONT face=Tahoma color=#9acd32></FONT></STRONG>&nbsp;</DIV>
<P align=center><INPUT style="WIDTH: 104px; HEIGHT: 24px" onclick=CalcResult(this.form) type=button size=16 value="منتديات وردة الربيع" name=Button></P>