var xmlHttp
var idp
var act
function addRemove(file,id,action)
{
	if(action=='add')
	{
		//document.form1.checkbox[].checked = true;
		act='checked disabled';
	}
	else
	{
		act=' disabled';
	}/**/
idp=id
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 } 
var url=file
url=url+"?id="+id
url=url+"&action="+action
//url=url+"&subject="+subj
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged
xmlHttp.open("POST",url,true)
xmlHttp.send(null)

} 

function stateChanged()
{ 
 if (xmlHttp.readyState==2 )
 { 
 //document.getElementById(idp).innerHTML='Adding';
 document.getElementById(idp).innerHTML='<img src="images/loading.gif">';
 //alert('Loading');
 }
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 idpcheckbox = "a"+idp;
 document.getElementById(idp).innerHTML=xmlHttp.responseText;
document.getElementById(idpcheckbox).innerHTML='<input type="checkbox" name="" value="" style="position: relative; top: 0; left: 0"'+act+'>';
//document.getElementById(idpcheckbox).innerHTML='';
 }
// alert(id);
} 

function GetXmlHttpObject()
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
 {
 objXMLHttp=new XMLHttpRequest()
 }
else if (window.ActiveXObject)
 {
 objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
 }
return objXMLHttp
}