potrebujem poradit

prosim o pomoc v mozile a firefoxe mi stranka funguje pekne ale ako nahle ju otvorim v IE prestane mi menu fungovat a nefunguje jeho prekryvanie css. www.credo1.sk

.menu {
padding:2px;
margin: 2px;
}
.menu a {
text-decoration: none;
color: white;
display: block;
width: 100%;
text-align: center;

}
.menu ul, .menu li {
list-style-type: none;
margin: 0;
padding: 0 .5em;

}

ul.uroven1 {
width: 130px;

}
ul.uroven1 li.polozka1 {
position: relative;
font-weight: bold;
font-size: 14px;
height: 30px !important;
line-height: 30px;
background: #336699 ;
padding: 0 .5em;
height: 1em;
border-bottom: solid #000066 2px;

}
ul.uroven2 {
position: absolute;
line-height: 100%;
left: 125px;
top: 0;
width: 170px;
background: #000066 ;
visibility: hidden;
padding: .2em .2em;

}
ul.uroven2 img {
border: solid #386 2px;
}
ul.uroven2 li.polozka2 a {
font-weight: arial;
text-align: left;
height: 30px;
line-height: 30px;
padding: 0 .5em .1em;
margin: 0 -.5em;

}

.menu a:hover {
text-decoration: none;
}
ul.uroven2 li.polozka2 a:hover {
color: black;
background: #6699ff;

}
ul.uroven1 li.polozka1 {
behavior: url(hovermenu.htc);
}
ul.uroven1 li.polozka1:hover,
ul.uroven1 li.polozka1Hover {
background: #6699ff ;
}
ul.uroven1 li.polozka1Hover ul.uroven2,
ul.uroven1 li.polozka1:hover ul.uroven2 {
visibility: visible;
}
.cl {
clear: both;
list-style: none;
}