if (parseInt(navigator.appVersion) >= 4) {
			if (navigator.appName == "Netscape") {isNav = true;}
			else {isNav = false;}
		}
		
		function right(url,a,b,c,d,e) {
			var breedte = a ? a : 335;
			var hoogte = b ? b : 125;
			var statusbalk = e ? e : 0;
			var boven = Math.floor((top.screen.height - hoogte)/19);
			var links = Math.floor((top.screen.width - breedte)/1.5);
		
			var popup = window.open(url,'MyWindowR','toolbar=0,location=0,directories=0,status='+statusbalk+',menubar=0,scrollbars='+c+',resizable=0,copyhistory=0,width='+breedte+',height='+hoogte+',screenX='+links+',screenY='+boven+',left='+links+',top='+boven);
			popup.opener = self;
			popup.focus();
		}
                function left(url,a,b,c,d,e) {
			var breedte = a ? a : 335;
			var hoogte = b ? b : 125;
			var statusbalk = e ? e : 0;
			var boven = Math.floor((top.screen.height - hoogte)/19);
			var links = Math.floor((top.screen.width - breedte)/10);
		
			var popup = window.open(url,'MyWindow','toolbar=0,location=0,directories=0,status='+statusbalk+',menubar=0,scrollbars='+c+',resizable=0,copyhistory=0,width='+breedte+',height='+hoogte+',screenX='+links+',screenY='+boven+',left='+links+',top='+boven);
			popup.opener = self;
			popup.focus();
		}
               function rightun(url,a,b,c,d,e) {
			var breedte = a ? a : 335;
			var hoogte = b ? b : 125;
			var statusbalk = e ? e : 0;
			var boven = Math.floor((top.screen.height - hoogte)/1);
			var links = Math.floor((top.screen.width - breedte)/1.5);
		
			var popup = window.open(url,'MyWindowU','toolbar=0,location=0,directories=0,status='+statusbalk+',menubar=0,scrollbars='+c+',resizable=0,copyhistory=0,width='+breedte+',height='+hoogte+',screenX='+links+',screenY='+boven+',left='+links+',top='+boven);
			popup.opener = self;
			popup.focus();
                }

                function leftun(url,a,b,c,d,e) {
			var breedte = a ? a : 335;
			var hoogte = b ? b : 125;
			var statusbalk = e ? e : 0;
			var boven = Math.floor((top.screen.height - hoogte)/1);
			var links = Math.floor((top.screen.width - breedte)/10);
		
			var popup = window.open(url,'MyWindowL','toolbar=0,location=0,directories=0,status='+statusbalk+',menubar=0,scrollbars='+c+',resizable=0,copyhistory=0,width='+breedte+',height='+hoogte+',screenX='+links+',screenY='+boven+',left='+links+',top='+boven);
			popup.opener = self;
			popup.focus();
		}