function rollOn(id) {
	element = document.getElementById(id);
	element.src = "images/"+id+"_on.png";
}
function rollOut(id) {
	element = document.getElementById(id);
	element.src = "images/"+id+".png";
}
function rollOnBrand(id) {
	element = document.getElementById(id);
	element.src = "images/brands/"+id+"-2.gif";
}
function rollOutBrand(id) {
	element = document.getElementById(id);
	element.src = "images/brands/"+id+".gif";
}