<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD> <TITLE> New Document </TITLE> </HEAD>
<script>
function ff(obj){
var str='';
str+='r.value = ';
str+='parseInt('+v1.value+')';
str+=obj.value;
str+='parseInt('+v2.value+')';
alert(str);
eval(str);
}
</script>
<BODY>
<input id=v1 value="0"><br>
<input id=v2 value="0"><br>
<input id=b type=button value="+" onclick="ff(this);">
<input id=b type=button value="-" onclick="ff(this);">
<input id=b type=button value="/" onclick="ff(this);">
<input id=b type=button value="*" onclick="ff(this);">
<br>
<input id=r value="0"><br>
</BODY>
</HTML>
