/* images preload */
if (document.images) {
	menu1off = new Image(); menu1off.src = "images/menu1.gif";menu1on = new Image(); menu1on.src = "images/menu1a.gif";
	menu2off = new Image(); menu2off.src = "images/menu2.gif";menu2on = new Image(); menu2on.src = "images/menu2a.gif";
	menu3off = new Image(); menu3off.src = "images/menu3.gif";menu3on = new Image(); menu3on.src = "images/menu3a.gif";
	menu4off = new Image(); menu4off.src = "images/menu4.gif";menu4on = new Image(); menu4on.src = "images/menu4a.gif";
	menu5off = new Image(); menu5off.src = "images/menu5.gif";menu5on = new Image(); menu5on.src = "images/menu5a.gif";
	menu6off = new Image(); menu6off.src = "images/menu6.gif";menu6on = new Image(); menu6on.src = "images/menu6a.gif";
	menu7off = new Image(); menu7off.src = "images/menu7.gif";menu7on = new Image(); menu7on.src = "images/menu7a.gif";
	menu8off = new Image(); menu8off.src = "images/menu8.gif";menu8on = new Image(); menu8on.src = "images/menu8a.gif";
}
	
/* images change */
function changeImages(){
	if(document.images){
		for(var i=0; i<changeImages.arguments.length; i+=2){
			document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
		}
	}
}