JQ获取浏览器宽度，根据不同宽度给div赋值
var winWidth = $(window).width();
var winHeight =$(window).height();
$(window).resize(function(){
winWidth = $(window).width();
winHeight = $(window).height();
changeSiz();
});
changeSiz();
function changeSiz() {
if ( winWidth>850 ) {
$(".xingxiang").css({
height:xx_Height,
})
}else{
$(".xingxiang").css({
height:"auto"
})
}
if ( winWidth>850 && winWidth < 1330 ) {
$(".left").css({
display:"none"
})
}
};