if(parent.document.all.framesetID.cols=="0,*,100")
parent.document.all.framesetID.cols="100,*,100"
else
parent.document.all.framesetID.cols="0,*,100
parent.document.all.framesetID.cols="100,*,100"
else
parent.document.all.framesetID.cols="0,*,100
<frameset id="framesetID" cols="100,*,100">里的cols属性
<script>
function swap(name,prop1,prop2){
eval(name+"='"+(eval(name)!=prop1?prop1:prop2)+"'")
}
</script>swap("parent.document.all.framesetID.cols","0,20,*","100,20,*")