#left{
width: 200px;
float: left;
position:relative;
height:auto !important;
min-height:500px;
}

#content{
width:540px;
margin:0 0 15px 15px;
float: left;
}

#right{
margin-left:15px;
float: left;
}
.box_c {
width:540px;
}
.box_c .boxcontent  {
width:535px;
}
.box_c .boxtitle {
width:540px;
}