//Browser Support Code
function ajaxFunction(){
	var ajaxRequest;  // The variable that makes Ajax possible!
	var ajaxDisplay = document.getElementById('txtFilterOutput');
			
	// display a loading image so the user knows something is happening
	ajaxDisplay.innerHTML = '<br /><br /><p align="center"><img src="/img/structure/ajax-loader.gif" /> Searching....</p>';
	
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				// Something went wrong
				alert("Unknown Error!");
				return false;
			}
		}
	}
	
	// Create a function that will receive data sent from the server
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){

			//var ajaxDisplay = document.getElementById('txtFilterOutput');
			ajaxDisplay.innerHTML = ajaxRequest.responseText;
		}
	}

     // build the query and pass to sql file
	var casecategory = document.getElementById('casecategory').value;
	var queryString = "?casecategory=" + casecategory +"&random=" +new Date().getTime();
     
	ajaxRequest.open("GET", "filter.php" + queryString, true);
	ajaxRequest.send(null); 
	return false;
}