function mouseover(){
// mouseover(prefix of imgname must be the same with the prefix of filename,number of imgname,number of imgname,.,.,.,.,number of filename,over)
var path = mouseover.arguments[0].indexOf("inside") ? "images/" : "images/inside/";
for (i=1; i<eval(mouseover.arguments.length - 2); i++)
	document.images[mouseover.arguments[0] + mouseover.arguments[i]].src = path + mouseover.arguments[0] + mouseover.arguments[eval(mouseover.arguments.length - 2)] + mouseover.arguments[eval(mouseover.arguments.length - 1)] + ".gif";
}