function ajaxinit()
{
 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;
}