Ok guys I got the solution
go to 316, identify the following code lines and just replace between them
/* 3 column, content middle */
.col-3cm .main { background: url(img/sidebar/s-right-s2.png) repeat-y left 0; }
.col-3cm .main-inner { background: url(img/sidebar/s-left.png) repeat-y right 0; padding-right: 340px; padding-left: 260px; }
.col-3cm .s1 { float: right; margin-right: -340px; }
.col-3cm .s2 { float: left; margin-left: -260px; /* ingenuity! */ position: relative; left: -100%; }
.col-3cm .content { float: left; }
