if (ad_url != '') {

		var popupintervaldays = 1;
		

//we haven't opened a popup (until we know we have)
popupdone = false;







//encapsulated event listener function
//this won't allow the suppression of default action on click event in Safari
//but for these purposes that's fine, because we don't want|need to
function attachEventListener(target, eventType, functionRef)
{
	if (typeof target.addEventListener != 'undefined')
	{
		target.addEventListener(eventType, functionRef, false);
	}
	else if (typeof target.attachEvent != 'undefined')
	{
		target.attachEvent('on' + eventType, functionRef);
	}
	return true;
}




//maybe create a popup (depending on whether we have a cookie)
function maybeCreatePopup()
{
	//check for existing popup cookie
	cookiearray = document.cookie.split(/;\s*/);
	for(entry in cookiearray)
	{
		if(cookiearray[entry] == 'SPcookie=1') { popupdone = true; break; }
		if(cookiearray[entry] == 'SPsub=1') { popupdone = true; break; }
	}

	//if we haven't already done a popup
	if(!popupdone)
	{
		//add statistical identifying information
		//the type is popup because this is a non-specific random popup
		//the path tells us where in the site it was triggered from
		var now = new Date(), uid = now.getTime() + '-' + now.getMilliseconds() + '-' + Math.floor(Math.random() * 10000000);
		var popuphref = './Abod.php?url=' + ad_url;

		//open the popup
		popupnewwindow = window.open(popuphref, 'popme', 'width=800, height=600, location=yes, menubar=yes, status=yes, toolbar=yes, scrollbars=yes, resizable=yes, left=0, top=0');

		//if we don't have the reference or it got supressed
		//say that we haven't done a popup
		if (!popupnewwindow || popupnewwindow.closed)
		{
			popupdone = false;
		}

		//otherwise set a cookie to say that we have
		//and then set focus on the popup
		else
		{
			var expire = new Date();
			expire.setTime(expire.getTime() + (1800000 * popupintervaldays));
			document.cookie = 'SPcookie=1; expires=' + expire.toGMTString() + '; path=/';
			popupnewwindow.blur()
			window.focus();
		}
	}
}





//test whether we have cookie support
var popupcookiesenabled = false;
var expire = new Date();
expire.setTime(expire.getTime() + (10000));
document.cookie = 'SPtestcookie=1; expires=' + expire.toGMTString() + '; path=/';
cookiearray = document.cookie.split(/;\s*/);
for (entry in cookiearray)
{
	if (cookiearray[entry] == 'SPtestcookie=1')
	{
		popupcookiesenabled = true;
		break;
	}
}





//so now then, if we still record cookie support
if(popupcookiesenabled)
{
	//bind an encapsulated click handler to the document
	//to look for clicks on links that are game for triggering a popup
	//and route them to maybeCreatePopup
	//this handler needs to be encapsulated, and also handle return values carefully,
	//in order to play nicely with the new rel-popup scripting
	attachEventListener(document, 'click', function(e)
	{
		//get event target node
		//(remembering that e is already event in IE because we're using attachEvent)
		var node = e.target ? e.target : e.srcElement;
		

		//if we're not on the front page 
		//and this click isn't inside a relevant input elements

			//iterate to look for a link reference
			var havelink = false;
			if(node.nodeName.toLowerCase() == 'a')
			{
				havelink = true;
			}
			else
			{
				while(node.parentNode)
				{
					if(node.nodeName.toLowerCase() == 'a') { havelink = true; break; }
					else if(node.nodeName.toLowerCase() == 'body') { break; }
					else { node = node.parentNode; }
				}
			}

			//if we have a link reference
			if(havelink)
			{
				//look for a rel attribute that indicates a custom popup or _blank link
				//or a target attribute that is _blank (or _new)
				//and continue only if we don't have any of those things
				//this is to prevent multiple popups being generated at once

						//continue on to conditionally creating a regular popup
						maybeCreatePopup();

			}

			//if we don't have a link reference
			//continue on to conditionally creating a regular popup
			else { maybeCreatePopup(); }

	});
}

}