var xmlHttp
function commentfun()
	{		
 var com=document.getElementById("comment").value;

xmlHttp=GetXmlHttpObject(); 
	
	 
		if (xmlHttp==null)
		  {
		  alert ("Your browser does not support AJAX!");
		  return;
		  } 
		  
var url="comment.php";
url=url+"?coo="+com; 
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged5; 
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 
 

function stateChanged5() 
{  	 
	if(xmlHttp.readyState==4)
	{
	document.getElementById("comm").innerHTML=xmlHttp.responseText;
	}
	 
 
}

 
function GetXmlHttpObject()
{
var xmlHttp=null;
	try
	  {
	  // Firefox, Opera 8.0+, Safari
	  xmlHttp=new XMLHttpRequest();
	  }
		catch (e)
        {
		  // Internet Explorer
			  try
		     {
		    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
			   }
			  catch (e)
			    {
			    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			    }
	    }
return xmlHttp;
}