var starttimer; // algemene setTimeout variabele
var DEBUG = false;


window.onload=function(){
	
	//pngFix();
	setFooter();


}


function setFooter() {
	if (document.getElementById) {
		var windowHeight = getWindowHeight() - 0;  // ik weet niet waarom, maar zonder deze 3 pixels doet de strict document-type mode vreemd
		
		if (windowHeight > 0) {
			var wrapperHeight = document.getElementById('maincontent').offsetHeight;
			var footerHeight = document.getElementById('footer').offsetHeight;
			var topperHeight = 275 + footerHeight; 
			var maincontentHeight = document.getElementById('maincontent').offsetHeight;
			var subcontentHeight = document.getElementById('rechterblok').offsetHeight;
			//alert(wrapperHeight + " + " + windowHeight);
			
			//if (maincontentHeight+topperHeight > wrapperHeight) {
			//	document.getElementById('wrapper').style.height = maincontentHeight+topperHeight + 'px';
			//}
			
			if (maincontentHeight+topperHeight>windowHeight) {
				//alert(windowHeight);
				document.getElementById('contentframe').style.height = maincontentHeight + 'px';
				document.getElementById('footer').style.top = maincontentHeight+topperHeight-footerHeight + 'px';
			} 
			else if (subcontentHeight+topperHeight>windowHeight) {
				//alert(windowHeight);
				document.getElementById('contentframe').style.height = subcontentHeight + 'px';
				document.getElementById('footer').style.top = subcontentHeight+topperHeight-footerHeight + 'px';
			}
			else {
				//alert(windowHeight);
				document.getElementById('contentframe').style.height = windowHeight-topperHeight + 'px';
				document.getElementById('footer').style.top = windowHeight-footerHeight + 'px';
			}
			
			
			}
		}
	}
	
	
function getWindowHeight() {
			var windowHeight = 0;
			if (typeof(window.innerHeight) == 'number') {
				windowHeight = window.innerHeight;
			}
			else {
				if (document.documentElement && document.documentElement.clientHeight) {
					windowHeight = document.documentElement.clientHeight;
				}
				else {
					if (document.body && document.body.clientHeight) {
						windowHeight = document.body.clientHeight;
					}
				}
			}
			return windowHeight;
		}
		
		window.onresize = function() {
			setFooter();
		}


function getWindowWidth() {
	var windowWidth = 0;
	if (typeof(window.innerWidth) == 'number') {
		windowWidth = window.innerWidth;
	}
	else {
		if (document.documentElement && document.documentElement.clientWidth) {
			windowWidth = document.documentElement.clientWidth;
		}
		else {
			if (document.body && document.body.clientWidth) {
				windowWidth = document.body.clientWidth;
			}
		}
	}
	return windowWidth;
}

 
function pngFix()
{
	var arVersion = navigator.appVersion.split("MSIE")
	var version = parseFloat(arVersion[1])
	
	if ((version >= 5.5) && (document.body.filters)) 
	{
	   for(var i=0; i<document.images.length; i++)
	   {
		  var img = document.images[i]
		  var imgName = img.src.toUpperCase()
		  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
		  {
			 var imgID = (img.id) ? "id='" + img.id + "' " : ""
			 var imgClass = (img.className) ? "class='" + img.className + "' " : ""
			 var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
			 var imgStyle = "display:inline-block;" + img.style.cssText 
			 if (img.align == "left") imgStyle = "float:left;" + imgStyle
			 if (img.align == "right") imgStyle = "float:right;" + imgStyle
			 if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
			 var strNewHTML = "<span " + imgID + imgClass + imgTitle
			 + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
			 + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
			 + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
			 img.outerHTML = strNewHTML
			 i = i-1
		  }
	   }
	}
}