function getXMLHTTP() { //fuction to return the xml http object
		var xmlhttp=false;	
		try{
			xmlhttp=new XMLHttpRequest();
		}
		catch(e)	{		
			try{			
				xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e){
				try{
				xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
				}
				catch(e1){
					xmlhttp=false;
				}
			}
		}
		 	
		return xmlhttp;
	}
	
	
	
	function getData(strURL,strTarget) {		
		var req = getXMLHTTP();
		
		if (req) {
			
			req.onreadystatechange = function() {
				if (req.readyState == 4) {
					// only if "OK"
					if (req.status == 200) {						
						document.getElementById(strTarget).innerHTML=req.responseText;						
					} else {
						alert("There was a problem while using XMLHTTP:\n" + req.statusText);
					}
				}				
			}			
			req.open("GET", strURL, true);
			req.send(null);
		}
				
	}
	
	function clearData() {
		getData('inc/state_reg.inc.php?state_id=0&total=0','registration');
		getData('inc/vec_price.inc.php?vec_id=0','total');	
		getData('inc/state.inc.php','state');	
	}
	
	function variantCue() {
		getData('inc/state_reg.inc.php?state_id='+document.getElementById('state_id').value+'&total='+document.getElementById('total_value').value,'registration');	
	}