//preload mouseover images

if (document.images) {

	evidence = new Image();
		evidence.src = "images/evidence.jpg";
	evidence_over = new Image();
		evidence_over.src = "images/evidence_over.jpg";

	triggers = new Image();
		triggers.src = "images/triggers.jpg";
	triggers_over = new Image();
		triggers_over.src = "images/triggers_over.jpg";
		
	warming = new Image();
		warming.src = "images/warming.jpg";
	warming_over = new Image();
		warming_over.src = "images/warming_over.jpg";

	understanding = new Image();
		understanding.src = "images/understanding.jpg";
	understanding_over = new Image();
		understanding_over.src = "images/understanding_over.jpg";

	impacts = new Image();
		impacts.src = "images/impacts.jpg";
	impacts_over = new Image();
		impacts_over.src = "images/impacts_over.jpg";

	adapting = new Image();
		adapting.src = "images/adapting.jpg";
	adapting_over = new Image();
		adapting_over.src = "images/adapting_over.jpg";

	

}