<!-- TWO STEPS TO INSTALL : 1. Add the last code into the BODY of your HTML document --> <p align="center"><strong>Калькулятор</strong></p> <form name="Keypad" action> <div align="center"><center><table> <b> <tr> <td><div align="center"><center><table border="2" width="50" height="60" cellpadding="1" cellspacing="5" bgcolor="#8282FF"> <tr> <td colspan="3" align="middle"><input name="ReadOut" type="Text" size="24" value="0" width="100%"> </td> <td> </td> <td><input name="btnClear" type="Button" value=" C " onclick="Clear()"> </td> <td><input name="btnClearEntry" type="Button" value=" CE " onclick="ClearEntry()"> </td> </tr> <tr> <td><input name="btnSeven" type="Button" value=" 7 " onclick="NumPressed(7)"> </td> <td><input name="btnEight" type="Button" value=" 8 " onclick="NumPressed(8)"> </td> <td><input name="btnNine" type="Button" value=" 9 " onclick="NumPressed(9)"> </td> <td> </td> <td><input name="btnNeg" type="Button" value=" +/- " onclick="Neg()"> </td> <td><input name="btnPercent" type="Button" value=" % " onclick="Percent()"> </td> </tr> <tr> <td><input name="btnFour" type="Button" value=" 4 " onclick="NumPressed(4)"> </td> <td><input name="btnFive" type="Button" value=" 5 " onclick="NumPressed(5)"> </td> <td><input name="btnSix" type="Button" value=" 6 " onclick="NumPressed(6)"> </td> <td> </td> <td align="middle"><input name="btnPlus" type="Button" value=" + " onclick="Operation('+')"> </td> <td align="middle"><input name="btnMinus" type="Button" value=" - " onclick="Operation('-')"> </td> </tr> <tr> <td><input name="btnOne" type="Button" value=" 1 " onclick="NumPressed(1)"> </td> <td><input name="btnTwo" type="Button" value=" 2 " onclick="NumPressed(2)"> </td> <td><input name="btnThree" type="Button" value=" 3 " onclick="NumPressed(3)"> </td> <td> </td> <td align="middle"><input name="btnMultiply" type="Button" value=" * " onclick="Operation('*')"> </td> <td align="middle"><input name="btnDivide" type="Button" value=" / " onclick="Operation('/')"> </td> </tr> <tr> <td><input name="btnZero" type="Button" value=" 0 " onclick="NumPressed(0)"> </td> <td><input name="btnDecimal" type="Button" value=" . " onclick="Decimal()"> </td> <td colspan="3"> </td> <td><input name="btnEquals" type="Button" value=" = " onclick="Operation('=')"> </td> </tr> </table> </center></div></td> </tr> </table> </center></div></b> </form> <font face="Verdana, Arial, Helvetica" size="2"><script LANGUAGE="JavaScript"> <!-- Begin var FKeyPad = document.Keypad; var Accum = 0; var FlagNewNum = false; var PendingOp = ""; function NumPressed (Num) { if (FlagNewNum) { FKeyPad.ReadOut.value = Num; FlagNewNum = false; } else { if (FKeyPad.ReadOut.value == "0") FKeyPad.ReadOut.value = Num; else FKeyPad.ReadOut.value += Num; } } function Operation (Op) { var Readout = FKeyPad.ReadOut.value; if (FlagNewNum && PendingOp != "="); else { FlagNewNum = true; if ( '+' == PendingOp ) Accum += parseFloat(Readout); else if ( '-' == PendingOp ) Accum -= parseFloat(Readout); else if ( '/' == PendingOp ) Accum /= parseFloat(Readout); else if ( '*' == PendingOp ) Accum *= parseFloat(Readout); else Accum = parseFloat(Readout); FKeyPad.ReadOut.value = Accum; PendingOp = Op; } } function Decimal () { var curReadOut = FKeyPad.ReadOut.value; if (FlagNewNum) { curReadOut = "0."; FlagNewNum = false; } else { if (curReadOut.indexOf(".") == -1) curReadOut += "."; } FKeyPad.ReadOut.value = curReadOut; } function ClearEntry () { FKeyPad.ReadOut.value = "0"; FlagNewNum = true; } function Clear () { Accum = 0; PendingOp = ""; ClearEntry(); } function Neg () { FKeyPad.ReadOut.value = parseFloat(FKeyPad.ReadOut.value) * -1; } function Percent () { FKeyPad.ReadOut.value = (parseFloat(FKeyPad.ReadOut.value) / 100) * parseFloat(Accum); } // End --> </script> <!-- Script Size: 4.05 KB --> </font>