function style_chg(){
	var now = new Date();
	var day = now.getDate();
	if(day % 2 == 1) {
		document.writeln("<LINK rel=\"stylesheet\" type=\"text/css\" href=\"./../menu_style_green.css\">");
	} else {
		document.writeln("<LINK rel=\"stylesheet\" type=\"text/css\" href=\"./../menu_style_bule.css\">");
	}
}
function style_chg1(){
	var now = new Date();
	var day = now.getDate();
	if(day % 2 == 1) {
		document.writeln("<LINK rel=\"stylesheet\" type=\"text/css\" href=\"./menu_style_green.css\">");
	} else {
		document.writeln("<LINK rel=\"stylesheet\" type=\"text/css\" href=\"./menu_style_bule.css\">");
	}
}