var pre_imgs = new Array();
function Preload( src, name )
{
	pre_imgs[name] = new Image();
	pre_imgs[name].src = src;
}

function ChangeImage( img, name )
{
	if( typeof pre_imgs[name] != 'undefined' ){
		img.src = pre_imgs[name].src;
	}
}

function ChangeImageByName( imgName, name )
{
	var imgEl = document.getElementById( imgName );
	if( imgEl && (typeof pre_imgs[name].src) )
		imgEl.src = pre_imgs[name].src;
}

function FadeTo( img, name )
{
}

function Popup( url, width, Height )
{
	win = window.open( url,	'popup', 'status=no,border=no,toolbar=no,scrollbars=yes,width=' + width + ',height=' + Height );
}