function openWindow(){

    var dopen=confirm("是否确认打开新的窗口 ？");

        if(dopen==true){

             var dopen1=prompt("请输入你要打开的打开的网址","");

                 if(dopen1!=null){

                         window.open(dopen1,'_blank','width=400,height=500,menubar=no,toolbar=no');

                     }else{ alert("你取消了本次打开新窗口的访问 ");

                     } }else{ alert("你取消了本次新窗口的询问"); }  

     }