function over(imgName,img_src) {
	document[imgName].src=img_src;
}
function out(imgName,img_src) {
	document[imgName].src=img_src;
}

function preLoadMyImages() {
	arg=preLoadMyImages.arguments;
	imgs=new Array();
	i=imgs.length
	for(i=0; i<arg.length; i++)
		if (arg[i]!=0) {
		imgs[i]=new Image;
		imgs[i].src=arg[i];
	}
}