$(document).ready(function() {
		
	// Preload all rollovers
	$("#nav img").each(function() {
		// Set the original src
		rollsrc = $(this).attr("src");
		rollON = rollsrc.replace(/.gif$/ig,"_over.gif");
		$("<img>").attr("src", rollON);
	});
	
	// Navigation rollovers
	$("#nav a").mouseover(function(){
		imgsrc = $(this).children("img").attr("src");
		if(imgsrc) {
			matches = imgsrc.match(/_over/);
			// don't do the rollover if state is already ON
			if (!matches) {
				imgsrcON = imgsrc.replace(/.gif$/ig,"_over.gif"); // strip off extension
				$(this).children("img").attr("src", imgsrcON);
			}
		}
		
	});
	$("#nav a").mouseout(function(){
		$(this).children("img").attr("src", imgsrc);
	});
	

});