function gallery_popup(mark) {
var window_width = 540;
var window_height = 560;
var posTop = (screen.height-window_height)/2;
var posLeft = (screen.width-window_width)/2;
newWindow = window.open("popup.php?m="+mark+"","popup","width="+window_width+",height="+window_height+",scrollbars=no,left="+posLeft+",top="+posTop);
newWindow.focus();
}
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		flag_pl_over = newImage("images/flag_pl-over.gif");
		flag_en_over = newImage("images/flag_en-over.gif");
		flag_fr_over = newImage("images/flag_fr-over.gif");
		preloadFlag = true;
	}
}

function openPictureWindow_Fever(imageType,imageName,imageWidth,imageHeight,alt,posLeft,posTop) {  // v4.01
	newWindow = window.open("","newWindow","width="+imageWidth+",height="+imageHeight+",scrollbars=no,left="+posLeft+",top="+posTop);
	newWindow.document.open();
	newWindow.document.write('<html><title>'+alt+'</title><body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" onBlur="self.close()">'); 
	if (imageType == "swf"){
	newWindow.document.write('<object classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0\" width=\"'+imageWidth+'\" height=\"'+imageHeight+'\">');
	newWindow.document.write('<param name=movie value=\"'+imageName+'\"><param name=quality value=high>');
	newWindow.document.write('<embed src=\"'+imageName+'\" quality=high pluginspage=\"http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash\" type=\"application/x-shockwave-flash\" width=\"'+imageWidth+'\" height=\"'+imageHeight+'\">');
	newWindow.document.write('</embed></object>');	}else{
	newWindow.document.write('<img src=\"'+imageName+'\" width='+imageWidth+' height='+imageHeight+' alt=\"'+alt+'\">'); 	}
	newWindow.document.write('</body></html>');
	newWindow.document.close();
	newWindow.focus();
}
function openBooking () {
	window.open('http://www.powerhostels.com/hbaffiliate/index.cfm?FUSEACTION=listall&affId=7053&CURRENCY=usd&ARRIVAL=39202&NIGHTS=2&lan=pl','hbWindow','height=400,width=400,scrollbars=1,status=1');       
}