var iframeheight = 160 
var iframewidth = 345
var currheight = (document.body.clientHeight); var currwidth = (document.body.clientWidth);
function kill() { if (currheight < iframeheight+4 || currwidth < iframewidth+4) self.resizeTo(iframewidth,iframeheight) } setTimeout('kill()', 1)