save positions clicks into page

ClickHeat.js

var collectionsClicks = new Array();

var observerClicks = function(event) {
  
  var info = new Object();
	
	info.position = {};
	info.position.click_x = event.x;
	info.position.click_y = event.y;
	info.position.screenX = event.screenX;
	info.position.screenY = event.screenY;
	
	info.screen = {};
	info.screen.innerWidth = window.innerWidth;
	info.screen.innerHeight = window.innerHeight;
	info.screen.width = screen.width;
	info.screen.height = screen.height;
	
	info.element = {};
	info.element.className = event.srcElement.className;
	info.element.url = event.srcElement.baseURI;
	
	info.time = {};
	info.time.timestamp = event.timeStamp;
	
	collectionsClicks.push(info);
}

document.onclick=observerClicks;