<frameset name=framesetname cols="300,*">
<frame name="left" src="left.htm">
<frame name="right" src="right.htm">
</frameset>right.htm
<script>
openclose=true;
</script>
<input type=button value=openclose onclick="parent.framesetname.cols=openclose?'*,100%':'300,*';openclose=!openclose">
<frame name="left" src="left.htm">
<frame name="right" src="right.htm">
</frameset>right.htm
<script>
openclose=true;
</script>
<input type=button value=openclose onclick="parent.framesetname.cols=openclose?'*,100%':'300,*';openclose=!openclose">
<frame name="left" src="left.htm">
<frame name="middle" src="middle.htm">
<frame name="right" src="right.htm">
</frameset>//middel.htm<script language=javascript>
function changeWin(){
if(parent.framesetname.cols == "162,25,*")
{
parent.framesetname.cols = "1,25,*";
document.all.btnName.value='>';
}
else
{
parent.framesetname.cols = "162,25,*";
document.all.btnName.value='<';
}
}
</script>
<body topmargin=0 marginheight=0 leftmargin=0 marginwidth=0 bgcolor=#d0d0c8><button onclick=changeWin(); id=btnName><</button>
</body>
</html>
<frame name="left" src="left.htm" SCROLLING=NO NORESIZE=yes>
<frame name="middle" src="middle.htm" SCROLLING=no NORESIZE=yes>
<frame name="right" src="right.htm" SCROLLING=no NORESIZE=yes>
</frameset>
//需另建立right.htm和left.htm文件
//middle.htm<script language=javascript>
openclose=true;
function changeWin(){
document.all.btnName.value=openclose?'->':'<-';
parent.framesetname.cols =openclose?"1,18,*":"100,18,*";
openclose=!openclose;
}
</script><body topmargin=0 marginheight=0 leftmargin=0 marginwidth=0 bgcolor=#d0d0c8>
<button onclick=changeWin(); id=btnName><-</button>
</body>
</html>