Commonly used iframe segmentation on javascript websites_javascript skills

The control block in the middle is actually an iframe, and its width is defined as 10.
Then in his internal js, control the left and right 2 iframes.

Copy the code The code is as follows:

function switchSysBar(){
if (parent.document.getElementById('attachucp').cols=="160,10,*"){
document.getElementById('leftbar' ).style.display="";
parent.document.getElementById('attachucp').cols="0,10,*";
}
else{
parent.document.getElementById ('attachucp').cols="160,10,*";
document.getElementById('leftbar').style.display="none"
}
}

<frameset id="attachucp" framespacing="0" border="0" frameborder="no" cols="160,10,*" rows="*"> <frame scrolling="yes" noresize frameborder="no" name="leftFrame" src="test.html"> <frame id="leftbar" scrolling="no" noresize name="switchFrame" src="swich.html"> <frame scrolling="yes" noresize border="0" name="mainFrame" src="http://www.jb51.net"> </frameset>
[Ctrl A select all Note: If you need to introduce external Js, you need to refresh to execute ]