判断iframe是否加载完毕的方法（兼容ie和Firefox）(转)
<html><head><meta http-equiv="Content-Type" c><title>判断iframe是否加载完毕的方法（兼容ie和Firefox）</title></head><body><div align="center" style="position: absolute; width: 100px; height: 100px; z-index: 1; left:158px; top:17px" id="load"><img src="http://sysimages.tq.cn/images/analysis_images/ajax-loader.gif" /> loading</div><iframe style="visibility:hidden" onreadystatechange=stateChangeIE(this) onload=stateChangeFirefox(this) name="callframe" id="callframe" width="420" height="100" frameborder="0" scrolling="no" marginheight="0"></iframe><script>function stateChangeIE(_frame){if (_frame.readyState=="interactive")//state: loading ,interactive, complete{var loader = document.getElementById("load");loader.innerHTML = "";loader.style.display = "none";_frame.style.visibility = "visible";}}function stateChangeFirefox(_frame){var loader = document.getElementById("load");loader.innerHTML = "";loader.style.display = "none";_frame.style.visibility = "visible";}callframe.location.href="http://www.hao123.com";</script></body></html>?原文：http://m.cnblogs.com/43824/1368013.html
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