var $j = jQuery.noConflict();

$j(function(){
	// rollover
	$j('.imgover').each(function(){
		this.osrc = $j(this).attr('src');
		this.rollover = new Image();
		this.rollover.src = this.osrc.replace(/(\.gif|\.jpg|\.png)/, "_o$1");
	}).hover(function(){
		$j(this).attr('src',this.rollover.src);
	},function(){
		$j(this).attr('src',this.osrc);
	});
});