try this css instead of yours
#center_container{
border: 1px solid transparent;
margin-left: auto;
margin-right: auto;
min-height: 200px;
position: relative;
width: 1013px;
}
#banner_image{
float: left;
height: 153px;
left: 12px;
position: absolute;
top: 35px;
width: 309px;
display: block;
border: 1px solid;
}
#search{
border: 0 solid transparent;
display: block;
height: 29px;
width: 400px;
left: 380px;
position: absolute;
top: 170px;
z-index:1000:
}
#note{
color: #FFFFFF;
display: block;
left: 380px;
position: absolute;
text-align: left;
top: 56px;
width: 400px;
z-index:1000:
}