如何切换浏览器窗口？

Question

windowObj1.focus()
windowObj2.focus()

Answer 1

<script>
windowObj1=window.open("","","top=200")
windowObj2=window.open("","","top=300")
ok=false
function a()
{
if(windowObj1 && windowObj2)
{
if(ok) windowObj1.focus()
else
 windowObj2.focus()
 ok=!ok
}
}
</script>
<input onclick="a()" type=button value=change>

Answer 2

谢谢 net_lover(孟子E章) 
我能否根据window的名字来获得windowObj呢？
比如：
windowObj=window(winName)
if windowObj
   windowObj.focus()
else
   windowObj=window.open(url,winName)换句话说，我能否枚举出目前已打开的window呢？