web56

<head>
<script type="text/javascript">

function main()
{
	var ls = document.form1.list1.options[document.form1.list1.options.selectedIndex].value;
	var t1 = parseFloat(document.getElementById("ta1").value);
	var t2 = parseFloat(document.getElementById("ta2").value);
	var t3 = parseFloat(document.getElementById("ta3").value);
	var rz;

	switch(ls)
	{
		case 'sum':
			rz = t1+t2+t3;
			break;
		case 'raz':
			rz = t1-t2-t3;
			break;
		case 'sr':
			rz = (t1+t2+t3)/3;
			break;
		case 'pr':
			rz = t1*t2*t3;
			break;
	}

	var rbb = document.getElementsByName('rb');
	for(var i=0;i<rbb.length;i++)
		if(rbb[i].checked)
		{var key = i; break;}
	switch(key)
	{
		case 0:
			alert(rz);
			break;
		case 1:
			var x,y,win;
			x = (window.outerWidth - 400)/2 + window.screenX;
			y = (window.outerHeight - 300)/2 + window.screenY;
			win = window.open('','w1','height=300, width=400, left='+x+', top='+y);
			win.document.write(rz);
			break;
		case 2:
			document.getElementById("ta4").value = rz;
			break;
	}

}
</script>
</head>

<body>
<table width="600" border="0">
<tr>
<td width="200">
A<input type="text" id="ta1">
</td>
<td>
<form action="formdata" method="post" name="form1">
 <p><select name="list1" >
  <option value="sum" selected="selected">suma</option>
  <option value="raz">raznost</option>
  <option value="sr">srednee</option>
  <option value="pr">proizv</option>
 </select></p>
</form>
</td>
</tr>
<tr>
<td>
B<input type="text" id="ta2">
</td>
<td>
<input type="radio" name="rb" id="0">Alert
</td>
</tr>
<tr>
<td>
C<input type="text" id="ta3">
</td>
<td>
<input type="radio" name="rb" id="1">New Window
</td>
</tr>
<tr>
<td>
R<input type="text" id="ta4">
</td>
<td>
<input type="radio" name="rb" id="2">R
</td>
</tr>
<tr>
<td>
<input type="button" onclick="main()" value="Rez">
</td>
</tr>
</table>
</body>