var lastHeight;
function init() {
kaowhy();
lastHeight= ok888.document.body.scrollHeight;
setInterval(function(){
if(ok888.document.body.scrollHeight!=lastHeight) {
kaowhy();
lastHeight= ok888.document.body.scrollHeight;
}
},1);
}
function kaowhy(){
document.all('ok888').height=ok888.document.body.scrollHeight + 50;
}