function a1()
{
var mychar=document.getElementById("txt");
mychar.style.color="red";
mychar.style.backgroundColor="#ccc";
}
//定义"改变宽高"的函数
function a2()
{
var mychar=document.getElementById("txt");
mychar.style.height="400px";
mychar.style.width="400px";
}
function test(){
var a = confirm("是否打开新窗口？");
if(a == true){
var b = prompt("请输入你要打开的网址：","http://www.imooc.com/");
if(b!=null){
window.open(b,'_blank','width=400,height=500,menubar=no,toolbar=no');
}
}
function openWindow(){
var xian=confirm("是否打开新窗口");
if(xian==true){
url=prompt("请输入要打开的网址",'http://www.imooc.com');
window.open('url','_blank','width=400,heigth=500,menubar=no,toolbar=no');
}
}
function openWindow(){
var code = confirm("点击打开新窗口")
if (code=true){
window.open("http://www.imooc.com","width=500px,height=600px,menubar=no,toolbar=no")
}
}
