/*
 * set rollover 
 */

function setRollover(self, target, rolloverSrc) {
	target = jQuery(target).get(0);
	if (!self.inited) {
		var f = function (src) {
			return function () {
				jQuery(target).attr('src',src);
			}
		}
		target.originalSrc = jQuery(target).attr('src');
		self.rolloverImg = new Image();
		self.rolloverImg.src = rolloverSrc;
		jQuery(self).hover(f(rolloverSrc), f(target.originalSrc));
		self.inited = true;
	}
}