centrovani v ie

Ahoj. Stranky mam vycentrovane pomoci margin: auto. V mozille vse funguje, ale ie mi nic nevycentruje. Nevite, co s tim? Kamos to tak ma podobne a vse mu funguje. Dik.

#page {
width: 800px;
margin: auto;
}
#head {
width: 800px;
height: 192px;
background: url( 'head.jpg' ) no-repeat;
}
#body {
width: 800px;
min-height: 500px;
_height: 500px;
float: left;
background: url( 'body.jpg' ) repeat-y;
text-align: justify;
}
#menu {
width: 249px;
height: 192px;
float: left;
background-color: #7e0000;
position: relative;
left: 32px;
}
#main {
width: 458px;
float: right;
position: relative;
right: 42px;
top: 10px;
padding-bottom: 20px;
}
#tail {
width: 800px;
height: 49px;
float: left;
background: url( 'tail.jpg' ) no-repeat;
}