// AutoBlink
// Puts Google's Autolink on the Blink :)
// (c) 2005 Chris Ridings   http://www.searchguild.com
// Redistribute at will but leave this message intact
// -
// 5th March - Implemented speed enhancement suggested by the guy who wrote
// http://www.dougaltoolbar.com/
// -
// 5th March - Added additional elements to reduce machine load
// 5th March - Added option to not remove links but to 
// rewrite ISBN links as amazon affiliate links!
// Fill in the following
// if you wish to do this. e.g.  var amazonaffiliate="goodlookingco-20"
// Leave as is to remove links in the normal way
var amazonaffiliate="";

var linkcount;
function checklinks() {
 if (!(linkcount==document.links.length)) {
   // Something changed the links!
   // Iterate for an id of _goog
   for (i=0; i < document.links.length; i++) {
	if (document.links[i].id.substring(0,5)=="_goog") {
	// If we find an id of _goog then do something
		if (amazonaffiliate=="") { 
			// No affiliate id defined so remove the links
			var tr = document.links[i].parentTextEdit.createTextRange();
			tr.moveToElementText(document.links[i]);
			tr.execCommand("Unlink",false);
			tr.execCommand("Unselect",false);
			i--;
		} else {
			// An affiliate id defined so rewrite ISBN links
			if (document.links[i].href.indexOf("isbn")>0) {
var isbn=document.links[i].href.substring(document.links[i].href.indexOf("text")+5,document.links[i].href.length);
document.links[i].href="http://www.amazon.com/exec/obidos/external-search?search-type=ss&tag=" + amazonaffiliate + "&keyword=" + isbn + "&index=books";
			}
		}
	}
   }
  }
  linkcount = document.links.length;
  setTimeout("checklinks()",500);
}
if (document.getElementById && document.createElement) {
	linkcount=document.links.length;
	setTimeout("checklinks()",500);
}