<SCRIPT LANGUAGE="JavaScript"> <!-- Begin function DOit() { var userinput = document.calc.input.value; document.calc.input.value = eval(userinput); } function plus() { document.calc.input.value += '+'; } function minus() { document.calc.input.value += '-'; } function mult() { document.calc.input.value += '*'; } function div() { document.calc.input.value += '/'; } function decimal() { document.calc.input.value += '.'; } function openp() { document.calc.input.value += '('; } function closep() { document.calc.input.value += ')'; } function num(x) { document.calc.input.value += x; } function recip() { document.calc.input.value = 1/(document.calc.input.value); } function square() { document.calc.input.value = (document.calc.input.value)*(document.calc.input.value); } function cube() { document.calc.input.value = (document.calc.input.value)*(document.calc.input.value)*(document.calc.input.value); } function pi() { document.calc.input.value += Math.PI; } function plus_or_minus() { document.calc.input.value *= -1; } function percent() { document.calc.input.value *= .01; } function sqrt() { document.calc.input.value = Math.sqrt(document.calc.input.value); } function power() { var np = prompt("What power do you want? Must be a number!","") document.calc.input.value = Math.pow(document.calc.input.value, np); } function cos() { document.calc.input.value = Math.cos(document.calc.input.value); } function sin() { document.calc.input.value = Math.sin(document.calc.input.value); } function tan() { document.calc.input.value = Math.tan(document.calc.input.value); } function Round() { document.calc.input.value = parseInt(document.calc.input.value); } // End --> </script>

<FORM NAME="calc"> <TABLE> <BR><TABLE WIDTH="55" HEIGHT="65" CELLSPACING="2" CELLPADDING="5" BORDER="1"> <tr> <td><INPUT TYPE="text" NAME="input" SIZE="20" MAXLENGTH="30" class="disp"> <td><INPUT TYPE="button" VALUE=" ^ " onClick="power()" class="btswhite"> <td><INPUT TYPE="button" VALUE=" C " onClick="document.calc.input.value = ''; " class="btswhite"> <td><INPUT TYPE="button" VALUE="Cos" onClick="cos()" class="btsred"> </tr> <tr> <td><INPUT TYPE="button" Value=" 1 " class="btsblue" onClick="num(1)"> <INPUT TYPE="button" VALUE=" 2 " class="btsblue" onClick="num(2)"> <INPUT TYPE="button" VALUE=" 3 " class="btsblue" onClick="num(3)"> <INPUT TYPE="button" VALUE=" ( " class="btswhite" onClick="openp()"> <td><INPUT TYPE="button" VALUE=" + " onClick="plus()" class="btswhite"> <td><INPUT TYPE="button" VALUE="sqrt" onClick="sqrt()" class="btsred"> <td><INPUT TYPE="button" VALUE="Sin " onClick="sin()" class="btsred"> </tr> <tr> <td><INPUT TYPE="button" Value=" 4 " class="btsblue" onClick="num(4)"> <INPUT TYPE="button" Value=" 5 " class="btsblue" onClick="num(5)"> <INPUT TYPE="button" Value=" 6 " class="btsblue" onClick="num(6)"> <INPUT TYPE="button" NAME="closeprth" Value=" ) " class="btswhite" onClick="closep()"> <td><INPUT TYPE="button" VALUE=" - " onClick="minus()" class="btswhite"> <td><INPUT TYPE="button" Value=" 1/x" class="btsred" onClick="recip()"> <td><INPUT TYPE="button" VALUE="Tan" onClick="tan()" class="btsred"> </tr> <tr> <td><INPUT TYPE="button" Value=" 7 " class="btsblue" onClick="num(7)"> <INPUT TYPE="button" Value=" 8 " class="btsblue" onClick="num(8)"> <INPUT TYPE="button" Value=" 9 " class="btsblue" onClick="num(9)"> <INPUT TYPE="button" VALUE=" % " onClick="percent()" class="btswhite"> <td><INPUT TYPE="button" VALUE=" * " onClick="mult()" class="btswhite"> <td><button style="background: #999999; color: #FF0000; font-weight: bold" onClick="square()"> x² </button> <td><INPUT TYPE="button" VALUE="Rnd" onClick="Round()" class="btsred"> </tr> <tr> <td><INPUT TYPE="button" Value=" 0 " class="btsblue" onClick="num(0)"> <INPUT TYPE="button" Value=" . " class="btsblue" onClick="decimal()"> <INPUT TYPE="button" VALUE=" +/- " onClick="plus_or_minus()" class="btsblue"> <INPUT TYPE="button" Value=" Pi " class="btsblue" onClick="pi()"> <td><INPUT TYPE="button" VALUE=" / " onClick="div()" class="btswhite"> <td><button style="background: #999999; color: #FF0000; font-weight: bold" onClick="cube()"> x³ </button> <td><INPUT TYPE="button" VALUE=" = " onClick="DOit()" class="btsred"> </tr> </TABLE> </TABLE> </FORM>