function getWindowDims() {
  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;
  }
  return [myWidth, myHeight];
}


function initBoekingen(accommodatie) {
		if(!document.getElementById('boekingenWrapper')) {
			var newIframeWrapper = document.createElement('div');
			var newIframeControls = document.createElement('div');
			var boekingenIframeWrapper = document.createElement('div');
			
			var closeFrameAnchor = document.createElement('a');
			var closeFrameAnchorSpan = document.createElement('span');
			var closeFrameText = document.createTextNode('sluiten');
			var boekingIframe = document.createElement('iframe');
			newIframeWrapper.id= 'boekingenWrapper';
			newIframeControls.id= 'iframeControls';
			boekingIframe.id = 'boekingenFrame';
			boekingenIframeWrapper.id = 'boekingenIframeWrapper';
			
			closeFrameAnchorSpan.appendChild(closeFrameText);
			closeFrameAnchor.appendChild(closeFrameAnchorSpan);
			newIframeControls.appendChild(closeFrameAnchor);
			newIframeWrapper.appendChild(newIframeControls);
			boekingenIframeWrapper.appendChild(boekingIframe);
			newIframeWrapper.appendChild(boekingenIframeWrapper);

			
			closeFrameAnchor.onclick = function() {
				this.parentNode.parentNode.style.display = 'none';
				return false;
			}
			closeFrameAnchor.id = 'closeFrameAnchor';
			boekingIframe.frameBorder=0;
			document.body.appendChild(newIframeWrapper);
			var width = 995;
			var height = 710;
			winDims = getWindowDims();
			var left = (winDims[0] - width)/2;
			var top = (winDims[1] - height)/2;
			if (left < 0) left = 10;
			
			if (top < 0) {
				top = 10;
				newIframeWrapper.style.height = 540;
				boekingIframe.style.height = 470;
				boekingenIframeWrapper.style.height = 450;
			}
			
			newIframeWrapper.style.left = left;
			newIframeWrapper.style.top = top;

			
			
		}


		var boekingenWrapper = document.getElementById('boekingenWrapper');
		
		
		boekingenWrapper.style.display = 'block';
		
		boekingIframe = document.getElementById('boekingenFrame');
		
		boekingIframe.src = 'http://www.sudtours.nl/utilpages/PriceTable.aspx?code='+accommodatie;
}