// initilize code
$(function(){
    
	$(".btn")
		.mouseover(function () {
			this.src = this.src.replace(/^(.+)(.png)$/, "$1_over$2");
		})
		.mouseout(function () {
			this.src = this.src.replace(/^(.+)_over(.png)$/, "$1$2");
		})
		.each(function () {
			this.preloaded = new Image;
			this.preloaded.src = this.src.replace(/^(.+)(.png)$/, "$1_over$2");
		});
	
	$(".btnUp-box")
		.click( function() {
			$('html,body').animate( { scrollTop: 0 }, 500 );
			return false;
		});
	
	$('#smenu').hide();
	
	$('#m_info')
		.click( function() {
			$('#smenu').slideToggle();
			return false;
		});
	
});