.shadow-left{
 filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='images/shadow-left.png');
 background-repeat: repeat-y;
 background-position: top right;
 width: 10px;
 
 }
 
 .shadow-left[class] {
  background-image: url(images/shadow-left.png);
  }  
  
   .shadow-right{
 filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='images/shadow-right.png');
 background-repeat:repeat-y;
 background-position: top left;
 width: 10px;
 
 }
 
 .shadow-right[class] {
  background-image: url(images/shadow-right.png);
  }