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 getModel(strURL) {	// 1	
		var req = getXMLHTTP();
		if (req) { // 2
			req.onreadystatechange = function() { // 3
				if (req.readyState == 4) { // 4
					// only if "OK"
					if (req.status == 200) { // 5					
						document.getElementById('modeldiv').innerHTML=req.responseText;						
					} else { // 5
						alert("There was a problem while using XMLHTTP:\n" + req.statusText);
					}
				} // 4				
			} // 3
			req.open("GET", strURL, true);
			req.send(null);
		} // 2
	} // 1

	function getYear1(strURL) {		
		var req = getXMLHTTP();
		if (req) {
			req.onreadystatechange = function() {
				if (req.readyState == 4) {
					// only if "OK"
					if (req.status == 200) {						
						document.getElementById('yeardiv').innerHTML=req.responseText;						
					} else {
						alert("There was a problem while using XMLHTTP:\n" + req.statusText);
					}
				}				
			}			
			req.open("GET", strURL, true);
			req.send(null);
		}
	}