$(document).ready(function(){
	var targetimg=$('#gnav img');
	for(var j=0;j<targetimg.length;j++){
		if($(targetimg[j]).parent().parent().attr('class') != $('body').attr('class').replace("page_","")){
			$(targetimg[j]).mouseover(function(ev){
				img_on(ev);
			});
			$(targetimg[j]).mouseout(function(ev){
				img_off(ev);
			});
		}else{
			var newsrc=$(targetimg[j]).attr('src').replace("_off.","_on.");
			$(targetimg[j]).attr('src',newsrc);
		}
	}
		
});

function img_on(ev){
	var newsrc=$(ev.target).attr('src').replace("_off.","_on.");
	$(ev.target).attr('src',newsrc);

}

function img_off(ev){
	var newsrc=$(ev.target).attr('src').replace("_on.","_off.");
	$(ev.target).attr('src',newsrc);
}