okay, i got this code off a website to change layouts at will:
<div id="skin" >
<select onchange="document.location = '/viewstory.php?skin=' + this.options[this.selectedIndex].value + '&sid=24240&textsize=0&chapter=32';" name="skin" >
<option value="FounderofSlytherin">FounderofSlytherin </option>
<option value="dragon">dragon</ option>
<option value="Dreamer">Dreamer</option >
<option selected="" value="FounderofRavenclaw" >FounderofRavenclaw</option>
<option value="FounderofHufflepuff ">FounderofHufflepuff</option>
<option value="Simplicity ">Simplicity</option>
<option value="FounderofGryffindor ">FounderofGryffindor</option>
</select>

and i don't know exactly how to use it. can any one tell me how? all i need to know is what to put in.

You shouldn't take other people's codes if you don't know how to use them. ;) Try reading a tutorial (http://www.daydreamgraphics.com/d/tutorial/list/164/2) instead. :)

never mind. I figured it out. i don't know how, i just did.