// functions for the new popunder ad displayed when the picture gallery popup 
// is closed
document.domain = "gastro.rosenheim24.de";

bDebug = false;
var DEFAULT_COUNTDOWN_TIMER_SECONDS = 5;
var countdownTimer = DEFAULT_COUNTDOWN_TIMER_SECONDS + 1;
var countdownTimerThreadId = null;
var popunderHasData = false;
var popunderZoneID = 541;
var popunderAdId = "R1024Vol_Popunder_Ad";

function initializePopunder() {
	var oLink = document.createElement("link")
	oLink.href = "http://www.vol.at/SysRes/R1024VOLSkin/R1024VOLPopunder.css";
	oLink.rel = "stylesheet";
	oLink.type = "text/css";
	document.getElementsByTagName("head")[0].appendChild(oLink);

	var sURL = "http://www.vol.at/lassdichueberraschen/ad.aspx" + "?ZoneID=" + popunderZoneID + "&Task=Get&Browser=NETSCAPE4&PageID=1205";
	try {
        ajaxAdvert(sURL, popunderAdId, false);        
    } catch (e) {}

}

function openPopunder() {
	try {
		if (document.getElementById(popunderAdId).innerHTML.length > 30) {
			var y = (window.pageYOffset) ? window.pageYOffset + 10 : document.documentElement.scrollTop + 10;                    
			document.getElementById('R1024Vol_Popunder').style.display = 'block';
			document.getElementById('R1024Vol_Popunder').style.top = y + 'px';

			grayOut(true,{'opacity':'25', 'zindex':'11000'})

			countdownPopunder();
		}			
	} catch (e) {}
  return false;
}

function countdownPopunder() {
    countdownTimer = countdownTimer - 1;
    if (countdownTimer == 0)
        return closePopunder();
    
    try {
        document.getElementById('R1024Vol_Popunder_Countdown_Text_Counter').innerHTML = countdownTimer;
        countdownTimerThreadId = setTimeout("countdownPopunder()", 1000);
    } catch (e) {}
}

function closePopunder() {
    if (countdownTimerThreadId != null) {
        clearTimeout(countdownTimerThreadId);
        // resetting the timer to its default
        countdownTimer = DEFAULT_COUNTDOWN_TIMER_SECONDS + 1;
        countdownTimerThreadId = null;
    }
    
    try {
		grayOut(false);
        document.getElementById('R1024Vol_Popunder').style.display = 'none';
    } catch (e) {}
    return false;
}

function trim(stringToTrim) {
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}

function grayOut(vis, options) {
  // Pass true to gray out screen, false to ungray
  // options are optional.  This is a JSON object with the following (optional) properties
  // opacity:0-100         // Lower number = less grayout higher = more of a blackout 
  // zindex: #             // HTML elements with a higher zindex appear on top of the gray out
  // bgcolor: (#xxxxxx)    // Standard RGB Hex color code
  // grayOut(true, {'zindex':'50', 'bgcolor':'#0000FF', 'opacity':'70'});
  // Because options is JSON opacity/zindex/bgcolor are all optional and can appear
  // in any order.  Pass only the properties you need to set.
  var options = options || {}; 
  var zindex = options.zindex || 50;
  var opacity = options.opacity || 70;
  var opaque = (opacity / 100);
  var bgcolor = options.bgcolor || '#000000';
  var dark=document.getElementById('darkenScreenObject');
  if (!dark) {
    // The dark layer doesn't exist, it's never been created.  So we'll
    // create it here and apply some basic styles.
    // If you are getting errors in IE see: http://support.microsoft.com/default.aspx/kb/927917
    var tbody = document.getElementsByTagName("body")[0];
    var tnode = document.createElement('div');           // Create the layer.
        tnode.style.position='absolute';                 // Position absolutely
        tnode.style.top='0px';                           // In the top
        tnode.style.left='0px';                          // Left corner of the page
        tnode.style.overflow='hidden';                   // Try to avoid making scroll bars            
        tnode.style.display='none';                      // Start out Hidden
        tnode.id='darkenScreenObject';                   // Name it so we can find it later
    tbody.appendChild(tnode);                            // Add it to the web page
    dark=document.getElementById('darkenScreenObject');  // Get the object.
  }
  if (vis) {
    // Calculate the page width and height 
    if( document.body && ( document.body.scrollWidth || document.body.scrollHeight ) ) {
        var pageWidth = document.body.scrollWidth+'px';
        var pageHeight = document.body.scrollHeight+'px';
    } else if( document.body.offsetWidth ) {
      var pageWidth = document.body.offsetWidth+'px';
      var pageHeight = document.body.offsetHeight+'px';
    } else {
       var pageWidth='100%';
       var pageHeight='100%';
    }   
    //set the shader to cover the entire page and make it visible.
    dark.style.opacity=opaque;                      
    dark.style.MozOpacity=opaque;                   
    dark.style.filter='alpha(opacity='+opacity+')'; 
    dark.style.zIndex=zindex;        
    dark.style.backgroundColor=bgcolor;  
    dark.style.width= pageWidth;
    dark.style.height= pageHeight;
    dark.style.display='block';                          
  } else {
     dark.style.display='none';
  }
}