var url ="";
var what = "";
function Insert_chat(text, PageUrl)
{
	if(document.frmChat.mytext.value=="")
	{
		alert("Please enter text");
		document.frmChat.mytext.focus();
		return false;
	}	
	else if(document.frmChat.mytext.value.length > 150)
	{
		alert("Please enter at most 150 characters in the comment field");
		document.frmChat.mytext.focus();
		return false;
	}
	else if(!checkHTMLtags(document.frmChat.mytext))
	{
		document.frmChat.mytext.focus();
		return false;
	}
	else
	{
		url=PageUrl;
		what = "SetProduct(req.responseText)";
		DoCallback("chat="+text);
	}
}

function SetProduct(charContent)
{
	document.getElementById('responsecontainer').innerHTML = charContent;
	document.frmChat.mytext.value = "";
	document.frmChat.mytext.focus();
}

function checkHTMLtags(sender)  
{  
	var trgtId = sender;  
	var strArray = trgtId.value;  
	var str=trgtId.value;  
	//convert to lowercase  
	strstr=str.toLowerCase()  
	//split the string by taking <br> as reference  
	var strstrArray=str.split('<br>');  
	if (strArray.length > 0)  
	{  
		
		for(k=0;k<strArray.length;k++)   
		{  
			
			for(i=0;i<strArray[k].length;i++)  
			{  
				
				//check for the presence of < and if available check the following char  
				//condition added to include > symbol as well   
				if((strArray[k].charAt(i)=='<') || (strArray[k].charAt(i)=='>'))  
				{ 
					
					var j=i+1;  
					var str1=strArray[k].charAt(i);  
					var myRegxp=/^[0-9]*$/ ;  
					if(myRegxp.test(str1) == false)  
					{  
							
						alert("No HTML Tags allowed");  
						trgtId.focus();  
						//args.IsValid = false;  
						return false;  
					}  
				}  
			}  
		}  
	}  
	//args.IsValid = true;  
	return true;  
}