$.fn.extend({
	enter: function() {//plugins creation
		 return this.each(function() {
		   var this_class = $(this).attr("class");
		   if(this_class!='no'){
			if($(this).find("img")[0]){
			var pth = $(this).find("img")[0];
			 //alert($(this).children().attr("href"));
			$(this).focus(function(){
					$(pth).attr("src",pth.src.replace(/_off/g, '_on'));// mouse over Image
				})
				.mouseover(function(){
					$(pth).attr("src",pth.src.replace(/_off/g, '_on'));// mouse over Image
				})
				.mouseout(function(){
					$(pth).attr("src",pth.src.replace(/_on/g, '_off'));// mouse out image
				})
				.blur(function(){
					$(pth).attr("src",pth.src.replace(/_on/g, '_off'));// mouse out image
				});

			}
			}
		 });
	 }
});

/*
$(document).ready(function(){
//$('#gnb_mn ul li a').enter();
$('#snb ul li a').enter();
$('.imgcg a').enter();

});
*/