/*
	getElementsByClassName
	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/	
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};       




// measurement script for positioning stuff a bit more relative to to size of screen

function giveWindowSize() {
	
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
   
  }

 // myWiHe is om totale oppervlak scherm te berekenen. bv: 480*480=230400. 
 myWiHe = myWidth * myHeight;

// hoogteScroller
	
	// checken of er een Facebookbalkje boven de pagina staat. zo ja, scrollbalk 50px verkorten
	if (document.getElementById('FBpluginOmhulling')) {
			var hoogteSlider=((myHeight)-305);                                       
			}
    else {var hoogteSlider=((myHeight)-255);} 
		
	if (myWiHe > 230400 && document.getElementById('sliderContainer')) {
		
		
		if (hoogteSlider > 200) { 
		
		
			if (hoogteSlider < 502) {
				document.getElementById('sliderContainer').style.height= hoogteSlider+'px';}
				else {document.getElementById('sliderContainer').style.height= '502px';}
			}
		else {document.getElementById('sliderContainer').style.height= '200px';}

	}   


// hoogteCentreer

	if (myWiHe > 230400 && document.getElementById('centreer')) {


	var hoogteCentreer=((myHeight)-20); // -20 = compensatie voor 10px margin-top en gewenste 10px ruimte onderin van "centreer"
		if (hoogteCentreer > 520) { 
		
		
			if (hoogteCentreer < 830) {
				document.getElementById('centreer').style.height= hoogteCentreer+'px';}
				else {document.getElementById('centreer').style.height= '830px';}
			}
		else {document.getElementById('centreer').style.height= '520px';}
	
	}


}


function iDroidYes() {
		
		if ((navigator.userAgent.indexOf('iPhone') != -1) ||  
		(navigator.userAgent.indexOf('iPod') != -1) || 
		(navigator.userAgent.indexOf('Android') != -1)) {
		
		iYs='true';
		}  

	else iYs='false';
	return iYs;
}



// init position measurement scripts: giveWindowSize() + slideshow   

window.onresize = function X1(){
giveWindowSize()
}

window.onload = function X2(){
giveWindowSize();

slideshow.init('slideshow','show');
	

}