if(document.images) {
	block1 		= new Image;
	block2 		= new Image;
	block3		= new Image;
	block1On 	= new Image;
	block2On	= new Image;
	block3On	= new Image;
	block1.src 	= 'images/block-one.png';
	block2.src 	= 'images/block-two.png';
	block3.src	= 'images/block-three00.png';
	block1On.src= 'images/block-one-on.png';
	block2On.src= 'images/block-two-on.png';
	block3On.src= 'images/block-three00-on.png';
	
	sigil1		= new Image;
	sigil2		= new Image;
	sigil3		= new Image;
	sigil4		= new Image;
	sigil1.src	= 'images/sigilone.png';
	sigil2.src	= 'images/sigiltwo.png';
	sigil3.src	= 'images/sigilthree.png';
	sigil4.src	= 'images/sigilfour.png';
	
}

function rollImage(action, imageName,height){
	if(imageName.length > 0){
		var item				= eval("document." + imageName);
		if(action == "on"){
			item.src 			= "images/block-" + imageName + "-on.png";
		}else{
			item.src 			= "images/block-" + imageName + ".png";
		}
		item.height				= height;
	}
}

function rollImageSigil(action, imageName){
	if(imageName.length > 0){
		var item				= eval("document." + imageName);
		if(action == "on"){
			item.src 			= "images/" + imageName + "_on.png";
		}else{
			item.src 			= "images/" + imageName + ".png";
		}
	}
}