$(document).ready(function(){  
	$(".menu-list li:last").css("background","none");
	$(".menu-list li").hover(function() {
        $(this).children("a").addClass("current");
		$(this).children("div").show();
    }, function() {
        $(this).children("a").removeClass("current");
		$(this).children("div").slideUp();
    });

$('.banners').scrollable({size:1,items:'.banners ul',loop:true,prev:"a.banner-left",next:"a.banner-right"}).autoscroll({autoplay: true,autopause:false,interval:8000,steps:1});
});



function CheckSearch(){
	CheckForm = document.productsearch
	if (CheckForm.keyword.value==""){
		alert("请输入关键字");
		CheckForm.keyword.focus();
		return false;
	}
	if (CheckForm.keyword.value=="请输入关键字"){
		alert("请输入关键字");
		CheckForm.keyword.focus();
		return false;
	}
}

function scrolldiv(id){
	var menuYloc = $(id).offset().top; 
	$(window).scroll(function (){ 
	var offsetTop = menuYloc + $(window).scrollTop() +"px"; 
	$(id).animate({top : offsetTop },{ duration:600 , queue:false }); 
	}); 
}

function AutoResizeImage(maxWidth,maxHeight,objImg){
var img = new Image();
img.src = objImg.src;
var hRatio;
var wRatio;
var Ratio = 1;
var w = img.width;
var h = img.height;
wRatio = maxWidth / w;
hRatio = maxHeight / h;
if (maxWidth ==0 && maxHeight==0){
Ratio = 1;
}else if (maxWidth==0){//
if (hRatio<1) Ratio = hRatio;
}else if (maxHeight==0){
if (wRatio<1) Ratio = wRatio;
}else if (wRatio<1 || hRatio<1){
Ratio = (wRatio<=hRatio?wRatio:hRatio);
}
if (Ratio<1){
w = w * Ratio;
h = h * Ratio;
}
objImg.height = h;
objImg.width = w;
}