calendar css on IE

Hello, I’m using the standard calendar of wordpress. All work nice on Firefox, but on IE I can not control the calendar size with the css property “width” or the hack “_width”. Can someone help me to corect that please.
Thank you and sorry for my bad english
Here is my css:

#calendar {
}
#wp-calendar {
border-bottom: 1px dashed #ddd;
border-left: 1px dashed #ddd;
border-right: 1px dashed #ddd;
empty-cells: hide;
font-size: 9px;
margin: 0px;
width: 90%;
background-color: #F6F6F6;
color: #888888;

}

#wp-calendar #next a {
padding-right: 5px;
text-align: right;
text-decoration: none;
background-color: #F6F6F6;
font-weight: bold;
}
#wp-calendar #prev a {
padding-left: 5px;
text-align: left;
text-decoration: none;
background-color: #F6F6F6;
font-weight: bold;
}
#wp-calendar #next a:hover, #wp-calendar #prev a:hover {
background-color: #DE3A3A;
}

#wp-calendar a {
display: block;
text-decoration: none;
}
#wp-calendar a:hover {
background-color: #DE3A3A;
color: #FFFFFF;
text-decoration: none;
}
#wp-calendar caption {
border-top: 1px dashed #ddd;
border-left: 1px dashed #ddd;
border-right: 1px dashed #ddd;
font-size: 10px;
text-align: right;
margin: 0px;
text-decoration: none;
color: #0C89F3;
}
#wp-calendar caption a{
text-decoration: none;
background-color: #F6F6F6;
}
#wp-calendar td {
color: #0C89F3;
font: normal 10px Georgia, “Times New Roman”, Times, serif;
letter-spacing: normal;
padding: 0px;
text-align: center;
background-color: #F6F6F6;
}
#wp-calendar td.pad:hover {
background-color: #F8F8F8;
}
#wp-calendar td:hover {
color: #FFFFFF;
background-color: #0C89F3;
}
#wp-calendar th {
font-style: normal;
text-transform: capitalize;
text-align: center;
}
#wp-calendar #today {
color: #FFFFFF;
background-color: #99D1FF;
}
#wp-calendar .today a{
font-weight: bold;
color: #DE3A3A;
background-color: #99D1FF;
}
#wp-calendar .today a:hover{
color: #FFFFFF;
background-color: #DE3A3A;
}