在页面中打开页面

下面为效果显示

脚本说明:
把如下代码加入<body>区域中：
<form name="jumpy">
<select name="example" size="1" onChange="gone()">
<option value="http://www.sina.com.cn" selected>新浪网</option>
<option value="http://www.163.com">网易</option>
<option value="http://www.google.com">Google搜索</option>
<option value="http://www.sohu.com">搜狐</option>
</select>

var displaymode=0
//if displaymode=0, configure inline frame attributes (ie: dimensions, intial document shown
var iframecode='<iframe id="external" style="width:85%;height:400px" src="http://www.cctv.com"></iframe>'

/////NO NEED TO EDIT BELOW HERE////////////

if (displaymode==0)
document.write(iframecode)

function gone(){
var selectedurl=document.jumpy.example.options[document.jumpy.example.selectedIndex].value
if (document.getElementById&&displaymode==0)
document.getElementById("external").src=selectedurl
else if (document.all&&displaymode==0)
document.all.external.src=selectedurl
else{
if (!window.win2||win2.closed)
win2=window.open(selectedurl)
//else if win2 already exists
else{
win2.location=selectedurl
win2.focus()
}
}
}
//-->
</script>