function ajaxFunction(){
	var ajaxRequest;  // The variable that makes Ajax possible!
	
	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("Your browser broke!");
				return false;
			}
		}
	}	
	// Create a function that will receive data sent from the server
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var ajaxDisplay = document.getElementById('ajaxDiv');
			ajaxDisplay.innerHTML = ajaxRequest.responseText;
		}
	}
	var day = document.getElementById('apday').value;
	var mnth = document.getElementById('apmnth').value;
	var yr = document.getElementById('apyr').value;
	var tme = document.getElementById('aptime').value;
	var queryString = "?d=" + day + "&m=" + mnth + "&y=" + yr + "&t=" + tme;
	ajaxRequest.open("GET", "chkappavail.php" + queryString, true);
	ajaxRequest.send(null); 
}