Отображении фона в ИЕ8 - Вопросы по CSS

/****************************

Avoid modifying this file.
Put your styles in custom.css

*****************************/


body{
	font-family:Helvetica,Arial,Times New Roman, Solaimanlipi,"Shonar Bangla";
	background: url(../images/gradient.png)repeat-x #d3caaa;
	padding: 0;
	margin: 0;
	line-height: 1.3em;
 }
#am_canvas{
	background-color:#fff;
	margin:15px auto 0px;
	position:relative;
}
#am_wrap{
	padding:10px;
}
#logo{
	max-width:300px;
	margin:0;
	float:left;
}
#logo div, #logo p{margin:0;}
#logo img{border:0;}
#logo-right{float:right;}
div#banner{margin:10px;}
#page-border-left {
  margin: 0 auto;
  padding: 0 0 0 14px;
  background-color: transparent;
  background-image: url(../images/border-left.png);
  background-repeat: repeat-y;
  background-position: left;
}

#page-border-right {
  margin: 0; 
  padding: 0 13px 0 0;
  background-color: transparent;
  background-image: url(../images/border-right.png);
  background-repeat: repeat-y;
  background-position: right;
}
#leftTop{
	background-color: #796646;
	position: absolute;
	margin:0;
	padding:0;
	top: 0;
	left: 0;
	width: 15px;
	height: 15px;
	background: url(../images/corner-top-left.png) no-repeat top left;
	z-index: 6;
	}
#leftBot{
	background-color: #d3caaa;
	width: 49px;
	height: 40px;
	background-image: url(../images/corner-bottom-left.png);
	position: absolute;
	bottom: 0;
	left: 0;
	z-index: 7; 
}
#bgTop{
	background: url(../images/border-top.png) #796646 repeat-x top;
	height: 15px;
}
#bgBot{
	background: url("../images/border-bottom.png") #D3CAAA repeat-x center bottom;
    height: 40px;
}
#rightTop{
	background: url("../images/corner-top-right.png") #796646 no-repeat  right top;
    height: 15px;
    position: absolute;
    right: 0;
    top: 0;
    width: 15px;
    z-index: 6;
}
#rightBot{
	background-color: #D3CAAA;
	background-image: url("../images/corner-bottom-right.png");
    bottom: 0;
    height: 40px;
    position: absolute;
    right: 0;
    width: 49px;
    z-index: 7;
}
/*columns*/
#leftCol{
	float:left;
/*	width:180px;*/
    overflow: hidden;
}
#rightCol{
	float:right;
/*	width:180px;*/
    overflow: hidden;
	padding-left: 10px;
}
#mainCol{
	display: block;
    overflow: hidden;
    padding-left: 10px;
    padding-right: 5px;
    padding-top: 15px;
}
#am_bottom{
	margin:-20px auto 0;
}
#bottomMods{
	padding:15px;
}
#am_bottom ul{
	padding-left:20px;
	list-style-type:square;
}
#am_bottom .am_mod_mid{overflow:hidden;}
#am_bottom_wrap{
	margin:15px auto 0px;
}
.botUsers{
/*	background-color:#fff;*/
	float:left;
}
.botUsers .am_mod_wrap{
	margin-left:10px;
	margin-right:10px;
}
#am_footer{
/*	background:#333;*/
	color:#fff;
	height:20px;
	margin:0px auto 15px;
	overflow:hidden;
	border:0px;
}
#botline{
	height:1px;
	background-color:#D3CAAA;
}
div.hr{
	height:0px;
	border-top:1px solid #d2c9a9;
	border-bottom:1px solid #a69973;
	margin:0 auto 5px;
	
}
div#copyright{
	float:left;
}
div#copyright2{
	float:right;
	max-width:250px;
	overflow:hidden;
	bottom:0;
}
div#copyright2 a {color:red;}
#copyright p, #copyright2 p{margin:0;}
.clear{clear:both;}
h1,h2,h3,h4,h5,h6,h7,.componentheading,.contentheading{color: #4F3B14;font-weight: bold;}
a:link, a:visited {
    color: #4F3B14;
	text-decoration: none;
}
a:hover, a:active, li a.active {
  color: #d40000;
  outline: none;
  text-decoration: none;
}
#leftCol h3,#rightCol h3{
	color: #4F3B14;
	font-size:110%;
	margin-bottom:5px;
}
#am_header{
	min-height:100px;
}
/*vertical menu*/
.menu-ver{
	list-style-type:none;
	padding-left:5px!important;
	margin-top:3px;
	margin-bottom:3px;
}
.menu-ver li {
	line-height:25px;
	border-bottom:1px dotted #E6E2C8;
	font-weight:400;
	width:90%;
	font-size:105%;
}
#leftCol ul,#rightCol ul{
	padding-left:20px;
/*	list-style-type:circle;*/
}
/*horizental menu */
#mainlevel-nav{
	list-style-type:none;
	text-decoration:none;
	margin:0;
	padding:0;
	border-bottom: 1px solid #D6D6D6;
	right:0;
	top:0;
}
#mainlevel-nav li{
	display:inline;
	line-height:25px;
	margin-right:10px;
	padding:0 0 7px 12px;
	background:url(../images/bullet.png) no-repeat left 35%;
	font-size:105%;
}
/*content style*/
div.componentheading  {
	background-color:#ebe0ca;
	font-style:bold;
	padding:5px;
	margin-bottom:10px;
	border:0;
	-moz-border-radius:5px;
	-webkit-border-radius:5px;
	border-radius:5px;
}
.small, .createdate,.modifydate{font-size:90%;color:#777;}
.article_column {padding-right: 5px;}
.column_separator{padding-left:10px;}
/*mdoule styles*/
#form-login fieldset {
	border:0;
}
#user1user2{margin-bottom:10px;}
.user1,.user2{float:left;vertical-align:top;}
.user1user2{width:50%;}
.user1 ul,.user2 ul{padding-left:20px;list-style-type:square;}