function m() {
	with(document) {
		var v=getElementById('set_mat').value;
		getElementById('mat').style.backgroundColor=v;
		for(var i=0;i<mat_color.length;i++) {
			getElementById('mat_color'+i).value=v;
		}
	}
}
function off() {
	return confirm('Your Shopping Cart will be EMPTY after LogOff. Continue?') ? true : false;
}