img.left_bar
{
position:fixed;
top:0px;
left:0px;
height:100%;
z-index:-21;
}

img.right_bar
{
position:fixed;
top:0px;
right:0px;
height:100%;
z-index:-20;
}

iframe.content
{
margin-left:15%;
margin-right:15%;
width: 70%;
height:100%;
padding:0px;
border-style:none;
}