function preload(imgObj,imgSrc) {
	if (document.images) {
		eval(imgObj+' = new Image()')
		eval(imgObj+'.src = "'+imgSrc+'"')
	}
}
function changeImage(layer,imgName,imgObj) {
	if (document.images) {
	
		if (document.layers && layer!=null && layer!='') eval('document.'+layer+'.document.images["'+imgName+'"].src = '+imgObj+'.src')
		else document.images[imgName].src = eval(imgObj+".src")
	}
}
function changeBorder(id, visible)
{
	var o = document.getElementById(id);
	
	if (visible)
		o.style.border = '1px solid #ff0000';
	else
		o.style.border = '1px solid #797979';
}
function showImage(imageName, imageFile)
{
	var img = document.getElementById(imageName).src = imageFile;
}