a[href$='.pdf'] { 
	padding-right: 18px;
	background: transparent url(../images/icon_pdf.gif) no-repeat center right;
}

a[rel='pdf'] { 
	padding-right: 18px;
	background: transparent url(../images/icon_pdf.gif) no-repeat center right;
}

a[rel*='pdf'] { 
	padding-right: 18px;
	background: transparent url(../images/icon_pdf.gif) no-repeat center right;
}

a[rel~='pdf'] { 
	padding-right: 18px;
	background: transparent url(../images/icon_pdf.gif) no-repeat center right;
}