<script language="JavaScript"> function typeChange(n) { var length = document.form1.elements[n+1].options.length; for(var i=0;i<length;i++) { document.form1.elements[n+1].options.remove(0); } var optionText = new Array(22); var zifuLink = new Array(22); var optionValue = new Array(22);
http://www.mnrc.com.cn
function typeChange(n)
{
var length = document.form1.elements[n+1].options.length;
for(var i=0;i<length;i++)
{
document.form1.elements[n+1].options.remove(0);
}
var optionText = new Array(22);
var zifuLink = new Array(22);
var optionValue = new Array(22);
<? optFill();?>
var typeID = document.form1.elements[n].value;
var newElem = document.createElement("OPTION");
newElem.text = "请选择……";
newElem.value = "";
document.form1.elements[n+1].options.add(newElem);
for(i=0;i<numrows;i++)
{
if(zifuLink[i] == typeID)//($rs[f_city] == typeID)
{ var newElem = document.createElement("OPTION");
newElem.text = optionText[i];
newElem.value = optionValue[i];
document.form1.elements[n+1].options.add(newElem);
}
}
}
</script>
<form name="form1">
大类<select name="et" id="select25" onChange="typeChange(0)">
</select>
大类下所属小类
<select name="prolb" id="select26">
</select>
</form>
从数据库中自己检索你的大类别