$(function(){

	var on_image = new Image();
	on_image.src = $("#oauth_button").attr("src").replace('_off', '_on');
	
	$("#oauth_button").mouseover(function(){
		var on_src = $(this).attr("src").replace('_off', '_on');
		$(this).attr("src", on_src);
	});
	
	$("#oauth_button").mouseout(function(){
		var off_src = $(this).attr("src").replace('_on', '_off');
		$(this).attr("src", off_src);
	});
});