function openWindow(){
var ops=confirm("是否打开!");
if(ops==true){
window.open("http://imooc.com","_blank","width=400,height=500,menubar=no,toolbar=no")
}
}
function openWindow(){
var isOpened=confirm("是否要打开窗口");
if(isOpened==true){
var a=prompt("确认输入网址","http：//www.imooc.com/");
if(a!=null){
window.open(a,'_blank','width=400px,height=500px,menubar=yes,toolbar=yes');
}
}
}
