function anMain() {
	try {

		var site = 129811;
		var cat = "";
		var kw = "";
		var url = window.location.href;				
		var title = document.title;
		var homepage1 = "http://www.student.com/";
		var homepage2 = "http://www.student.com";
		var homepage3 = "http://www.student.com/home.php";
		
		if (url != undefined && url != "") {
			if( (url == homepage1) || (url == homepage2) || (url == homepage3)) {
				kw = "homepage";
				cat ="homepage";
			}
			else {				
				cat = url.replace(/articles[.]student/ig,"");
				if(cat == url) {
					cat = url.replace(/http[:]\/\/([^.]*)[.]student[.]com(.*)/i,'$1');
					if((cat == url) || (cat == "www")) {
						cat = "";
					}		
				}
				else { //url is of type articles.student.com:				
					cat = url.replace(/http[:]\/\/articles[.]student[.]com\//i,"");
					if(cat != url) {
						cat = cat.replace(/([^/]*)\/([^/]*)\/([^/]*)/i,'$1/$2');		
					}
					else {
						cat = "";
					}
					
				}
				
				kw = gup("q", url);
				if(kw == null) {									
					if (title != undefined && title != "") {
						kw = title.replace(/[ -]?[ ]?((at)?(on)?[ ])?student[.]com[ ]?[ -]?/ig,"");
						kw = kw.replace(/article[s]?[,]?/ig,"");
						kw = kw.replace(/chat[s]?[,]?/ig,"");
						kw = kw.replace(/forum[s]?[,]?/ig,"");
					}
					else {
						kw = "";
					}
				}				
			}			
		}
		else {
			kw = "";
			cat = "";
		}			

		var encRegExp = new RegExp("%[0-9A-Fa-f][0-9A-Fa-f]");
		if (!encRegExp.test(cat)) {
			cat = escape(cat);
		}
		if (!encRegExp.test(kw)) {
			kw = escape(kw);	
		}

		var siteref = "";
		if (document.referrer != "" && document.referrer.indexOf(window.location.hostname) == -1) {
		      siteref = ";siteref=" + escape(document.referrer);
		}
		
        document.write("<IFRAME WIDTH='1' HEIGHT='1' MARGINWIDTH='0' MARGINHEIGHT='0' HSPACE='0' VSPACE='0' FRAMEBORDER='0' SCROLLING='no' SRC='http://pbid.pro-market.net/engine?site="+ site +";size=1x1;category="+ cat +";kw="+ kw + siteref +";rnd=(" + new Date().getTime() + " )'></IFRAME>");
	}
	catch (e){
	}
}
anMain();

function gup(name, url) {
	if (!url) url = window.location.href;
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
	var results = new RegExp("[\\?&]"+name+"=([^&#]*)").exec(url);
	if( results == null ) return null;
	else return decodeURIComponent(results[1].replace(/\+/g," ")); 
}