IE6 Problem...Brauche dringend Hilfe!

#navcontainer 

  {

border-width:0px 1px 0px 1px;
border-style:solid;
padding-right:0px;
margin:0px auto 0;
height:20px;
width:800px;
	}
	#navcontainer ul li
	{
		list-style: none;			
                float:left;
		background: url("images/normal.gif")  repeat-x 20px;
		font-size:10px;
		font-weight:bold;		
		font-family: verdana;
		text-align: center;
		letter-spacing:3px;
                width:100px;
                line-height:20px;
	}


    ul
    { 


    padding:0px;
    margin:0px;

    }

	#navcontainer a
	{
	        width:100px;
		color: #000;
		margin: 0px;
	        text-decoration: none;
		display: block;
		padding:0px;
		float:left;

		border-left: 1px solid #A8B090;
	}