//bt rollover
$(function(){
	$("img.rollover").mouseover(function(){
		$(this).attr("src",$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/,"$1_ro$2"));
	}).mouseout(function(){
		$(this).attr("src",$(this).attr("src").replace(/^(.+)_ro(\.[a-z]+)$/,"$1$2"));
	}).each(function(){
		$("<img>").attr("src",$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/,"$1_ro$2"));
	});	
});

/*font size toggle*/
$(function(){
	$("img.font_b").toggle(
	function(){
		$(this).attr("src",$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/,"$1_ro$2"));
		$("#main_contents").css("font-size","x-large");
	},
	function(){
		$(this).attr("src",$(this).attr("src").replace(/^(.+)_ro(\.[a-z]+)$/,"$1$2"));
		$("#main_contents").css("font-size","medium");
	})
});