var doTimer = true;

function disableTimer() {
	doTimer = false;
}

function activateTimer() {
	doTimer = true;
}

interProjects = function doInterProjects() {
	var timer = setInterval("switchProjects();", 2500);	
}

function switchProjects() {

	if(!doTimer) {
		return;
	}

	var current = projectActive;
	current = current + 1;
	
	if(current > 4) {
		current = 1;
	}
	
	changeProjects(current);
}

var preloadedImages = new Array();
function preloadImg(key, src) {
	var img = new Image();
	img.src = src;
	
	preloadedImages[key] = img;
}

addLoadEvent(interProjects);