var nt = !1;
$(window).bind("scroll",
function() {
var st = $(document).scrolltop();//往下滚的高度
nt = nt ? nt: $("#head").offset().top;
// document.title=st;
var sel=$("#head");
if (nt < st) {
sel.addclass("headfixed");
} else {
sel.removeclass("headfixed");
}
});

$('.dropdown-submenu').mouseover(function() { 
     		
    	 		$("#li-cp").css('background-color','#ffffff');
    	 		$("#li-cp a").css('background-color','#ffffff');
    	 		});

window.addeventlistener('load',function(){
    var col_link = document.queryselectorall('.col-sm-5 > a');
    for(var i=0; i<col_link.length; i++){
        col_link[i].addeventlistener('mouseover',(function(i){
            return function(){
                var pic_url = this.getattribute('go_pic');
                var col_pic = this.parentnode.parentnode.queryselector('.col-sm-7');
                col_pic.innerhtml = '<a href="'+this.href+'"><img style="width: 300px;" src="'+pic_url+'" /></a>'
            }
        })(i));
    }
});