<select name="sel" id="sel" onchange="shift(this)">
<option value=''>请选择</option>
<option value="1">1</option>
<option value="2">2</option>
</select><br/>
<input type="input" name="i" id="i" style="display:none"/>
<input type="checkbox" name="c" id="c" style="display:none"/><script language="javascript">
<!--
function shift( s )
{
if( s.value == 1 )
{
document.getElementById("i").style.display= "block";
document.getElementById("c").style.display= "none";
return;
}
if( s.value == 2 )
{
document.getElementById("c").style.display= "block";
document.getElementById("i").style.display= "none";
}
else
{
document.getElementById("c").style.display= "none";
document.getElementById("i").style.display= "none";
}
}
//-->
</script>
<option value=''>请选择</option>
<option value="1">1</option>
<option value="2">2</option>
</select><br/>
<input type="input" name="i" id="i" style="display:none"/>
<input type="checkbox" name="c" id="c" style="display:none"/><script language="javascript">
<!--
function shift( s )
{
if( s.value == 1 )
{
document.getElementById("i").style.display= "block";
document.getElementById("c").style.display= "none";
return;
}
if( s.value == 2 )
{
document.getElementById("c").style.display= "block";
document.getElementById("i").style.display= "none";
}
else
{
document.getElementById("c").style.display= "none";
document.getElementById("i").style.display= "none";
}
}
//-->
</script>
<!--
function chg(sel)
{
if(sel.options.selectedIndex == 0)
{
document.all.ipt.style.display = '';
document.all.chk.style.display = 'none';
}else
{
document.all.ipt.style.display = 'none';
document.all.chk.style.display = '';
}
}
//-->
</SCRIPT>
<select onchange="chg(this)">
<option/>111111
<option>2222222</option>
</select><input id="ipt" type = "text">
<input type = "checkbox" id = "chk" style="display:none">
<head>
<title>无标题文档</title>
<script language="javascript">
function pp(obj)
{
obj.style.display=(obj.style.display=="block"?"none":"block");
}
</script>
<script id="clientEventHandlersJS" language="javascript">
<!--function Select1_onchange() {
if(document.all("Select1").selectedIndex==1){
document.all("Text1").style.display="none";
document.all("Checkbox1").style.display="block";
}
else{
document.all("Checkbox1").style.display="none";
document.all("Text1").style.display="block";
}
}//-->
</script>
</head><body>
<form name ="form1">
<select name=Select1 id=Select1 onchange="return Select1_onchange()"><OPTION
value="" selected>1</OPTION><OPTION value="">2</OPTION></select>
<INPUT id="Text1" type="text" name="Text1">
<INPUT
id="Checkbox1" type="checkbox" name="Checkbox1">
</form>
</body>
</html>
<option value=1>1
<option value=2>2
</select>
<input name=m1 style="display:none"><input name=m2 type=checkbox style="display:none">
<script>
function a(o)
{
m1.style.display="none"
m2.style.display="none"
eval('m'+ o.options[o.selectedIndex].value +'.style.display=""')
}
</script>