<form name=form1>
<select name="type1">
<option value="1">新闻标题</option>
<option value="2">软件分类</option>
</select>
<input type=button onclick=formcheck()>
<div id=div1></div>
</form>
<script language=javascript>
function formcheck(){
alert("sdfs")
if(docunment.form1.type1.value="1"){
div1.innerHTML="<input type="text" name="search" size="15">"
}
else{
div1.innerHTML="<select name="soft_type">"
div1.innerHTML+=" <option value="1">应用软件</option>"
div1.innerHTML+=" <option value="2">系统软件</option>"
div1.innerHTML+=" <option value="3">xx软件</option>"
div1.innerHTML+="</select>"
}
}
</script>
<select name="type1">
<option value="1">新闻标题</option>
<option value="2">软件分类</option>
</select>
<input type=button onclick=formcheck()>
<div id=div1></div>
</form>
<script language=javascript>
function formcheck(){
alert("sdfs")
if(docunment.form1.type1.value="1"){
div1.innerHTML="<input type="text" name="search" size="15">"
}
else{
div1.innerHTML="<select name="soft_type">"
div1.innerHTML+=" <option value="1">应用软件</option>"
div1.innerHTML+=" <option value="2">系统软件</option>"
div1.innerHTML+=" <option value="3">xx软件</option>"
div1.innerHTML+="</select>"
}
}
</script>
<SCRIPT language="javascript">
function changeTitle(obj)
{
if(obj.value == "1")
content.innerHTML = "<input type=text name=search size=15>";
else
content.innerHTML = " <select name=soft_type>"
+ "<option value=1>应用软件</option>"
+ "<option value=2>系统软件</option>"
+ "<option value=2>xx软件</option>"
+ "</select>";
}
</SCRIPT>
<FORM>
<select name="type" onChange="changeTitle(this)">
<option value="1" selected>新闻标题</option>
<option value="2">软件分类</option>
</select><p>
<SPAN id="content">
<input type=text name=search size=15>
</SPAN>
</FORM>
</BODY>
<select name="type" onchange="ChangeShow(this.value)">
<option value="">请选择</option>
<option value="1">新闻标题</option>
<option value="2">软件分类</option>
</select><input type="text" name="search" size="15" style="display:none" disabled><select name="soft_type" style="display:none" disabled>
<option value="1">应用软件</option>
<option value="2">系统软件</option>
<option value="2">xx软件</option>
</select>
<input type="submit"/>
</form>
<script language="JavaScript">
function ChangeShow(iSelect)
{
if(iSelect=="1")
{
document.form1.search.style.display='block';
document.form1.search.disabled=false;
document.form1.soft_type.style.display='none';
document.form1.soft_type.disabled=true;
}
if(iSelect=="2")
{
document.form1.search.style.display='none';
document.form1.search.disabled=true;
document.form1.soft_type.style.display='block';
document.form1.soft_type.disabled=false;
}
}
</script>