I'm having problems with this bit of code.

index.html

<a href="index.php?id=home" onmouseover="writeinfo('home')">Home   </a>|


<div id="information">
                                modules <br />
                                modules <br />
                                modules <br />
                                modules <br />
                                modules <br />
</div>

js file

function writeinfo(type)
{
    var info;
    if(type=='home')
    {
       info = "<div align='center'><b>Home Page</b></div><br />
             News is displayed<br />";
    }else if(type=='flash')
    {
         info = "<div align='center'><b>Flash</b></div><br />
             All of my flash creations, good or bad<br />
            I've just started to learn flash.<br />
            If you want to use something, tell me<br />
            Questions and comments are welcome<br />";
    }else if(type=='web')
    {
         ....
    }

document.getElementById('information').innerHTML=info;

return;
}

Any help?

and the problem is ????

it wont work

what debugging errors are there ?
have you used FF and the javascript console?

more to the point why oh why are you writing content onto the page with javascript?????!!!