var AutoMouseover = new Object();

AutoMouseover.__preloads__ = new Object();

AutoMouseover.on = function( anchor ) {
	if (typeof anchor == 'string') { element = document.getElementById(anchor); }
	img = anchor.getElementsByTagName('img')[0];
	img.src = img.src.replace(/-off\./, "-on." );
};

AutoMouseover.off = function( anchor ) {
	if (typeof anchor == 'string') { element = document.getElementById(anchor); }
	img = anchor.getElementsByTagName('img')[0];
	img.src = img.src.replace(/-on\./, "-off." );
};

AutoMouseover.preload = function () {
	var url, img;
	for( var i=0; i<arguments.length; i++ ) {
		url = arguments[i];
		if( ! AutoMouseover.__preloads__[url] ) {
			img = new Image();
			img.src = url;
			AutoMouseover.__preloads__[url] = img;
		}
	}
};