// JavaScript Document
function getDetails(event){ 
	var click_x = event.offsetX?(event.offsetX):event.pageX-document.getElementById("container").offsetLeft;
	var click_y = event.offsetY?(event.offsetY):event.pageY-document.getElementById("container").offsetTop;
	
	/*
	if (IE) { // grab the x-y pos.s if browser is IE
		click_x = event.clientX + document.body.scrollLeft;
		click_y = event.clientY + document.body.scrollTop;
	}
	else { // grab the x-y pos.s if browser is NS
		click_x = event.pageX;
		click_y = event.pageY;
	}
	*/
	
	makeRequest(click_x,click_y);
} 
function makeRequest(x,y){ 
	if(window.XMLHttpRequest){
		request = new XMLHttpRequest();
	}
	else if(window.ActiveXObject){
		request = new ActiveXObject("MSXML2.XMLHTTP");
	}
	
	sendRequest(x,y);
}

function sendRequest(x,y){
	url = "heatclick.php?x="+x+"&y="+y;
	request.open("GET", url, true);
	request.send(null);
}