var mySel = document.getElementById("mySel");
var mySelInput = document.getElementById("mySelInput");
var mySelButton = document.getElementById("mySelButton");
var www_zzjs_net = document.getElementById("www_zzjs_net");
var mySelOpts = www_zzjs_net.getElementsByTagName("a");

for(i=0,l=mySelOpts.length;i<l;i++){
    mySelOpts[i].onclick = function(){
        mySelInput.value = this.innerHTML;
        anchor.target = "_blank"; 
        hideOptions();
        return false;
    }
    
}

function showOptions () {
	www_zzjs_net.style.display='block';
}
function hideOptions () {
	www_zzjs_net.style.display='none';
}
document.onclick = function(e){
	var evt = e?e:window.event;
	var ele = evt.srcElement || evt.target;
	if(ele.id == 'mySelInput' || ele.id == 'mySelButton'){
		showOptions();
	}else{
		hideOptions();
	}
}