$(document).ready(function(){ 
			
	// Preload all rollovers
	$("#lateral img, #form-contacto img, #cont-buscador img").each(function() {
		// Set the original src
		rollsrc = $(this).attr("src");
		rollON = rollsrc.replace(/.gif$/ig,"-over.gif");
		$("<img>").attr("src", rollON);
	});
	
	// Navigation rollovers
	$("#lateral a, #form-contacto a, #cont-buscador a").mouseover(function(){		
		imgsrc = $(this).children("img").attr("src");
		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);
			
			$("#lateral a, #form-contacto a, #cont-buscador a").mouseout(function(){
				$(this).children("img").attr("src", imgsrc);								 
			});		
		}
	});

});