window.onload = init;
function init() {
 imagePreloader();
 objectHovers();
};
function objectHovers() {
	var objects = document.getElementById('objects');
	var objectTags = objects.getElementsByTagName('img');
	
	for(var i=0;i<objectTags.length;i++){
		if (objectTags[i].nodeName=="IMG") {
			objectTags[i].onmouseover = function(){
              var imgName = this.getAttribute("src").split(".jpg");
              this.setAttribute("src",imgName[0]+"H.jpg");
			};
			objectTags[i].onmouseout = function(){
              var imgName = this.getAttribute("src").split("H.");
              this.setAttribute("src",imgName[0]+"."+imgName[1]);
			};
		}
	}
};
function imagePreloader() {
 contacts1 = new Image(); 
 contacts1.src = "images/contacts1H.jpg";	
 contacts2 = new Image(); 
 contacts2.src = "images/contacts2H.jpg";
 contacts3 = new Image(); 	
 contacts3.src = "images/contacts3H.jpg";	
 contacts4 = new Image(); 
 contacts4.src = "images/contacts4H.jpg";	
}