why css tabs look different in ie and firefox

i have created some tabs using css but they look horrible in ie 7. Why? Here is the html

<ul>
    <li><a href='view.php'>View</a><li>
    <li><a href='logout.php'>Logout<开发者_JS百科;/a><li>
    <li><a href='www.google.com'>Search</a><li>
</ul>

and here is the css

ul{list-style:none;height:20px;}
li{background-color:#ff0;float:left;margin:5px;width:60px;text-align:center;display:block;}
li:hover{background-color:#009;}
a{text-decoration:none;}

Here is how it looks in ff

Here is how it looks in ie

You're not terminating your list items correctly. Try replacing each <li> at the end of the lines with </li> and you should be good.

Have you tried a reset CSS like :

http://meyerweb.com/eric/tools/css/reset/

It could be appreciable...

Edit

@Kaivosukeltaja is right :

<li>...</li>

Will fix your problem. But you can let the CSS reset on your page ;)