Dear Sir, I have following codes

Code:
<html>
  <head>
    <title>Javascript function </title>
	
    <style type="text/css">
	.box
	{
		width:400px;
		background-color:#F0F8FF;
	}
	
	h4
	{
		color:#09F
	}
		
	</style>
    
<script type="text/javascript">
function hello(){
var xx=eval(form1.text1.value);
var yy=eval(form1.text2.value);
form1.text3.value=xx+yy
}
</script>
	
  </head>
    <body onLoad="form1.text1.focus()">  
	<center>
    <div class="box">
	<h1 style="color:#2c80d3 ">Javascript Function</h1>
	<table border="0" cellspacing="1" cellpadding="1" width="25%"> 
    	<form name="form1" action="textboxes.php" method="Post">
    <tr><td> First</d><td width="20px"><input type="text" name="text1"  value=""></td></tr>
      <tr><td> Second</d><td><input type="text" name="text2"  value="" onBlur="hello()"></td></tr>
	 <tr><td> Result</d><td><input type="text" name="text3"  value="" disabled=""></td></tr>
    </form>
	</table>
	<h4>Enter any digit in text1 and text2 and see result in text3</h4>

    	<h4>Is it possible to do above with php without submitting FORM?</h4>

    </div>
	</center>
    </body>
</html>
No problem, It works fine.
I used java script to sum two numbers.
Is it possible to add two numbers with php without using any submit button?

If yes then please guide me.

http://i41.tinypic.com/2rfev7m.jpg