function ajaxFunction()
{
	var xmlHttp;
	try
	{  
		// Firefox, Opera 8.0+, Safari  
		xmlHttp=new XMLHttpRequest();  
	}
	catch (e)
	{  
		// Internet Explorer  
		try
		{    
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");  
		}
	  	catch (e)
		{    
			try
		  	{      
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
			}
			catch (e)
			{      
				alert("Your browser does not support AJAX!");      
				return false;      
			}    
		}  
	}  
	return xmlHttp;
}