<html>
<head>
</head>
<body>
<input type="text" size="100" id="locationBar" value="" style="width:100%"><br>
<iframe id="good" src="http://www.baidu.com" style="width:100%; height: 400px"></iframe>
<div id="log1" style="width: 48%;float: left;border: 1px solid #cccccc;overflow:auto;"></div>
<div id="log2" style="width: 48%;float: right;border: 1px solid red;overflow:auto;"></div>
<script>
var x=0, y=0;
var prvSrc = 'http://www.baidu.com/';
function check() {
var curSrc = document.frames['good'].location.toString();
if(curSrc != prvSrc) {
log1.innerHTML = '<b><font color="red">[当前框架地址]</font></b> ' + curSrc + '<br>' + log1.innerHTML;
log2.innerHTML = '<b><font color="red">[前一框架地址]</font></b> ' + prvSrc + '<br>' + log2.innerHTML;
prvSrc = curSrc;
} else {
log1.innerHTML = '<b>[当前框架地址]</b> ' + curSrc + '<br>' + log1.innerHTML;
log2.innerHTML = '<b>[前一框架地址]</b> ' + prvSrc + '<br>' + log2.innerHTML;
}
locationBar.value=curSrc;
}
setInterval('check();', 500);
</script>
</body>
</html>
