function JSRandGetChars(){
	var text = "";
	var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	for( var i=0; i < 10; i++ ){
		text += possible.charAt(Math.floor(Math.random() * possible.length));
	}
	return text;
}

$fullpopnum = 0;

function FullPopup($url, $w, $h){
	$w = 1024;
	$h = 768;
	$fullpopnum++;
	window.open($url,'','width=' + $w + ',height=' + $h + ',scrollbars=yes,resizable=yes,toolbar=yes,directories=no,location=yes,menubar=yes,status=yes,left=0,top=0');
}

function ParentChangePage($unused,$urltoshow){
	window.location.href=$urltoshow;
}

refreshIntervalId = null;
zoneid2 = null;
zoneid3 = null;
bannid1 = null;


bannerimages = ['banner_artists.gif','banner_bannerrent.gif','banner_models.gif','banner_ITC Banner_Sensuous Escapes-02.jpg'];
banneradnumbers = ['1','2','4','38'];
bannerlinktypes = ['internal','internal','internal','external'];

bannerlen = bannerimages.length;
bindex = -1;
while(bindex < 0 || bindex >= bannerlen){
	bindex = Math.round(Math.random()*(bannerlen+1)-1);
}
bcurrentadnum = 0;
bcurrentlinktype = "internal";

sideimages = ['side_bannerrent.gif','side_implements.gif','side_messages.gif','side_models.gif','side_playingcards.gif'];
sideadnumbers = ['6','8','9','10','11'];
sidelinktypes = ['internal','internal','internal','internal','internal'];

sidelen = sideimages.length;
sindex = -1;
while(sindex < 0 || sindex >= sidelen){
	sindex = Math.round(Math.random()*(sidelen+1)-1);
}
scurrentadnum = [0,0,0,0];
scurrentlinktype = ["internal","internal","internal","internal"];

function ShowBannerAdvert(){
	adtoshow = bcurrentadnum;
	urltoshow = "showadvert.php?a=" + adtoshow;
	if(bcurrentlinktype=="external"){FullPopup(urltoshow,600,480);}
	else{ParentChangePage("middleframe",urltoshow);}
}

function ShowSideAdvert(zonenumber){
	adtoshow = scurrentadnum[zonenumber-1];
	urltoshow = "showadvert.php?a=" + adtoshow;
	if(scurrentlinktype[zonenumber-1]=="external"){FullPopup(urltoshow,600,480);}
	else{ParentChangePage("middleframe",urltoshow);}
}

function ChangeSideAdverts(){
	scurrentadnum[1] = sideadnumbers[sindex];
	scurrentlinktype[1] = sidelinktypes[sindex];
	document.getElementById("zone2").src = "images/banners/" + sideimages[sindex];
	sindex++;if(sindex >= sidelen){sindex = 0;}
	//
	scurrentadnum[2] = sideadnumbers[sindex];
	scurrentlinktype[2] = sidelinktypes[sindex];
	document.getElementById("zone3").src = "images/banners/" + sideimages[sindex];
	sindex++;if(sindex >= sidelen){sindex = 0;}
	//
}

function ChangeBannerAdvert(imageid){
	bcurrentadnum = banneradnumbers[bindex];
	bcurrentlinktype = bannerlinktypes[bindex];
	document.getElementById(imageid).src = "images/banners/" + bannerimages[bindex];
	bindex++;if(bindex >= bannerlen){bindex = 0;}
}

function ChangeAdverts(){
	ChangeSideAdverts();
	ChangeBannerAdvert("banner1");
}

function ChangeAdvertsFirst(){
	clearInterval(refreshIntervalId);
	zoneid2 = null;
	zoneid3 = null;
	bannid1 = null;
	ChangeAdverts();
	setInterval(ChangeAdverts, 30000);
}

refreshIntervalId = setInterval(ChangeAdvertsFirst, 500);