<script type="text/javascript" src="http://yandex.st/jquery/1.4.4/jquery.min.js"></script>
<FORM>
<SELECT ONCHANGE="Add(this.value)">
<OPTION selected>My Home Page</OPTION>
<OPTION VALUE="1">Resume</OPTION>
<OPTION VALUE="2">Hobbies</OPTION>
<OPTION VALUE="3">My Dog</OPTION>
</SELECT>
</FORM>
<div class=WrapAll>
<div id="1" style="display:none">info1</div>
<div id="2" style="display:none">info2</div>
<div id="3" style="display:none">info3</div>
</div>
<script>
function Add(a){
if(a!=''){
$("div.WrapAll > div").hide('fast')
$("div.#"+a).show('fast');}
}
</script>