// ===================
//  ONLOAD OPDRACHTEN
// ===================
 function doOnload() {
  setTableHeight();
  photobarCircle();
 }

// =======================================
// OPVRAGEN VAN FORMAAT VAN BROWSERVENSTER
// =======================================
 function getWindowSize(wh) {
  var winW = eval(document.getElementById("windowsize").offsetLeft) + eval(document.getElementById("windowsize").clientWidth);
  var winH = eval(document.getElementById("windowsize").offsetTop) + eval(document.getElementById("windowsize").clientHeight);

  if(wh=='width') { return winW; } else if(wh=='height') { return winH; } else { }
 }
 
 
// ============================================
//  HOOGTE TABLE AANPASSEN NAAR HOOGTE VENSTER 
// ============================================
 function setTableHeight() {
  var tableHeight = eval(document.getElementById('framesTable').clientHeight) - eval(document.getElementById('content').clientHeight);
  var contentHeight = eval(getWindowSize('height')) - eval(tableHeight);
  
  var logoLeft = eval(getWindowSize('width')) - eval('1000');
  var logoLeft = eval(logoLeft / 2) + eval('26');
  
  document.getElementById('content').style.height=""+contentHeight+"px";
  document.getElementById('contentFrame').style.height=""+contentHeight+"px";
  document.getElementById('header_logo').style.left=""+logoLeft+"px";
 }
 
// =================================
//  ADVERTENTIE AFBEELDING WISSELEN 
// =================================
	function toggleAdvertisement() {
		if(document.getElementById("advertisementURL").innerHTML == "Clik here for a map to find sports center Randwyck") {
			// PLATTEGROND WEERGEVEN
				document.getElementById("advertisementImage").src = "images/index/advertisement_map.jpg";
				document.getElementById("advertisementImage").width = "817";
				document.getElementById("advertisementImage").height = "485";
				document.getElementById("advertisementURL").innerHTML = "Return to the flyer";
		}
		else {
			// FLYER WEERGEVEN
				document.getElementById("advertisementImage").src = "images/index/advertisement_introduction.jpg";
				document.getElementById("advertisementImage").width = "841";
				document.getElementById("advertisementImage").height = "595";
				document.getElementById("advertisementURL").innerHTML = "Clik here for a map to find sports center Randwyck";
		}
	}