$(document).ready(function(){
	$(".pngfix").pngfix();
	var targetimg=$('.onoff img,#left p.bn img,#left ul.bn img,#gnav img,#fnav img,.go_top 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);
			});
			$(targetimg[j]).mouseout(function(ev){
				img_off(ev);
			});
		}else{
			var src=$(targetimg[j]).attr('src');
			var newsrc=src.replace("_off","_on");
			$(targetimg[j]).attr('src',newsrc);
			if(src.indexOf('.png',src.length-4) != -1){
				
			$(targetimg[j]).parent().parent().parent().attr('class','on');
			
			}
		}
	}
	
	$('#left ul.bn span,#left p.bn span,.go_top span').hover(
	function(ev){
				png_on(ev);
	},
	function(ev){						   
				png_off(ev);
	}	
	);
	
	
});

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

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

function png_on(ev){
	var pngdata = $(ev.target).css('filter');
	var pngdata=pngdata.replace("_off","_on");
	$(ev.target).css('filter',pngdata);
}

function png_off(ev){
	var pngdata = $(ev.target).css('filter');
	var pngdata=pngdata.replace("_on","_off");
	$(ev.target).css('filter',pngdata);

}