<script language="javascript" type="text/javascript"> <br><br>function getStyle() { <br><br>if (window.top == window.self) { <br><br>document.getElementById("top").style.display = 'block'; <br><br>} else { <br><br>document.getElementById("top").style.display = 'none'; <br><br><br>} <br><br>} <br></script>
当当前页面正常访问时显示div top
当当前页面在iframe中时页面不显示 div top










