Identifying Link Targets with CSS

Sources: Noupe "Useful CSS Snippets", 1stWebDesigner "25 Incredibly Useful Snippets for Developers"
See also Data uri's  http://davidwalsh.name/data-uri-php

/* external links */
a[href^="http://"]{
padding-right: 20px;
background: url(external.gif) no-repeat center right;
}

/* emails */
a[href^="mailto:"]{
padding-right: 20px;
background: url(email.png) no-repeat center right;
}

/* pdfs */
a[href$=".pdf"]{
padding-right: 20px;
background: url(pdf.png) no-repeat center right;
}

/* identify links that open in new window */

a[target="_blank"]:before,
a[target="new"]:before {
margin:0 5px 0 0;
padding:1px;
outline:1px solid #333;
color:#333;
background:#ff9;
font:12px "Zapf Dingbats";
content: "\279C";
}


  /* external links */ a[href^="http://"]{ padding-right: 20px; background: url(external.gif) no-repeat center right; } /* emails */ a[href^="mailto:"]{ padding-right: 20px; background: url(email.png) no-repeat center right; } /* pdfs */ a[href$=".pdf"]{ padding-right: 20px; background: url(pdf.png) no-repeat center right; } /* identify links that open in new window */ a[target="_blank"]:before, a[target="new"]:before { margin:0 5px 0 0; padding:1px; outline:1px solid #333; color:#333; background:#ff9; font:12px "Zapf Dingbats"; content: "\279C"; }