<%@ Page Language="C#" AutoEventWireup="true" CodeFile="w_rollbar.aspx.cs" Inherits="w_rollbar" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<link href="CSS/base.css" rel="Stylesheet" type="text/css" />
<script type="text/javascript">
function rollbarcontrol() {
if (window.parent.hiframe.cols == "0,11,*") {
imgrollbar.src = "img/roll_left.gif";
window.parent.hiframe.cols = "235,11,*";
}
else {
imgrollbar.src = "img/roll_right.gif";
window.parent.hiframe.cols = "0,11,*";
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="trollbar" cellpadding="0" cellspacing="0">
<tr>
<td onclick="rollbarcontrol();">
<img id="imgrollbar" src="img/roll_left.gif" alt="bb" />
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
执行到“imgrollbar.src = "img/roll_right.gif";”时系统报:“Microsoft JScript 运行时错误:‘imgrollbar’未定义”各位大大们帮一下忙,谢谢!
<head runat="server">
<title></title>
<link href="CSS/base.css" rel="Stylesheet" type="text/css" />
<script type="text/javascript">
function rollbarcontrol() {
if (window.parent.hiframe.cols == "0,11,*") {
imgrollbar.src = "img/roll_left.gif";
window.parent.hiframe.cols = "235,11,*";
}
else {
imgrollbar.src = "img/roll_right.gif";
window.parent.hiframe.cols = "0,11,*";
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="trollbar" cellpadding="0" cellspacing="0">
<tr>
<td onclick="rollbarcontrol();">
<img id="imgrollbar" src="img/roll_left.gif" alt="bb" />
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
执行到“imgrollbar.src = "img/roll_right.gif";”时系统报:“Microsoft JScript 运行时错误:‘imgrollbar’未定义”各位大大们帮一下忙,谢谢!
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imgrollbar是一个img标签
imgrollbar.src = "img/roll_left.gif";//这样是错误的
document.getElementById('imgrollbar').src= "img/roll_right.gif";//这样正确
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<frameset rows="85,*,22" cols="*" frameborder="no" border="0" framespacing="0">
<frame src="w_top.aspx" scrolling="No" noresize="noresize" />
<frameset id="hiframe" rows="*" cols="235,11,*" framespacing="0" frameborder="no" border="0" >
<frame src="" noresize="noresize" />
<frame src="w_rollbar.aspx" frameborder="no" scrolling="no" noresize="noresize" />
<frame src="" />
</frameset>
<frame src="w_bottom.aspx" />
</frameset>
<noframes>
<body>
</body>
</noframes>
</html>这是外面的框架页
if (window.parent.document.getElementById('hiframe').cols == "0,11,*") {
document.getElementById('imgrollbar').src = "img/roll_left.gif";
window.parent.document.getElementById('hiframe').cols = "235,11,*";
}
else {
document.getElementById('imgrollbar').src = "img/roll_right.gif";
window.parent.document.getElementById('hiframe').cols = "0,11,*";
}
}