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脚本说明:
第一步:把如下代码加入<head>区域中
<SCRIPT LANGUAGE="JavaScript">
<!--
image1= new Image();
image1.src = "image1.gif";
image2= new Image();
image2.src = "image2.gif";
image3= new Image();
image3.src = "image3.gif";
function imgchange(){
var imageNum = document.form.selImage.selectedIndex + 1;
fname = eval("image" + imageNum + ".src")
document.img.src = fname
}
//-->
</SCRIPT>
第二步:在<body>区域加入如下代码
<FORM name="form">
<SELECT NAME="selImage" size=1>
<OPTION>Image 1
<OPTION>Image 2
<OPTION>Image 3
</SELECT>
<INPUT type="button" value="View" onClick="imgchange()">
</FORM>
<IMG SRC="image1.gif" tppabs="http://www.csdn.net/javascript/image1.gif" NAME="img">
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