function getAjaxComp(){
	 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) { 
	            	   							return false;    
	            	   							}    
	               				}  
	  			}

	 
	 return xmlHttp;
	}