HTML DOM top Property
 Complete Window Object Reference
Definition and Usage
The top property returns the topmost ancestor window.
Syntax
Example
The following example checks whether the window is in a frame, and if it is -
it breaks out of the frame:
<html>
<head>
<script type="text/javascript">
function breakout()
{
if (window.top!=window.self)
{
window.top.location="tryjs_breakout.htm"
}
}
</script>
</head>
<body>
<form>
Click the button to break out of the frame:
<input type="button" onclick="breakout()" value="Break out!">
</form>
</body>
</html>
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Try-It-Yourself Demos
Break out of a frame
Resize a window
Resize a window to a specified size
Complete Window Object Reference
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