/*
		Chatel JS file ver 1.1	
	*/

	

	initLayout = function() 
	{
		var elemHeader = document.getElementById("pageheader");
			elemHeader.style.backgroundImage="url(/chatel/images/layout/header-image-"+ getRandomNumber(3) +".jpg)";
	}
	

	


	window.onload = initLayout;

	function getRandomNumber(maxSize)
	{
		return Math.round(Math.random() * parseInt(maxSize -1) || 0 ) +1
	}
	

	function openWindow(strUrl,strName,strSettings)
	{
		var strName = strName || 'chatelWindow';
		var strSettings = strSettings|| 'width=650,height=800,status=no,resizeable=yes,toolbar=no,menubar=no,screenX=10,screenY=10,top=10,left=10';
		var chWin = window.open(strUrl,strName,strSettings,true)
		chWin.focus();
		return false;
	}

	function openPopupPage(strUrl)
	{
		var strName = 'popuppage';
		var strSettings = 'width=550,height=500,scrollbars=1,scrollbars=yes,location=0,status=yes,resizable=yes,toolbar=yes,screenX=10,screenY=10,top=10,left=10';
		var myWin = window.open(strUrl,strName,strSettings,true)
		myWin.focus();
		return false;

	}

	function openTarievenWindow(strUrl)
	{
		var strName = 'chateltarieven';
		var strSettings = 'width=250,height=500,status=no,resizeable=yes,toolbar=no,menubar=no,screenX=10,screenY=10,top=10,left=10,scrollbars=1,scrollbars=yes';
		var chWin = window.open(strUrl,strName,strSettings,true)
		chWin.focus();
		return false;
	}

	function openFotoWindow(imgname)
	{
		imgname = imgname.replace(/.jpg/, '_groot.jpg');
		var strName = 'chatelFoto';
		var strSettings = 'width=500,height=380,status=no,resizeable=no,toolbar=no,menubar=no';
		var chWin = window.open(imgname,strName,strSettings,true)
		chWin.focus();
		return false;		
	}
	

	/* window.open('?run=fotowindow&img=koninglodewijk2.jpg','foto','width=600,height=450,left=5,top=5');return false; */

	function checkPoll(f)
	{
		var c = null;
		for (var i = 0; i < f.answer.length; i++) if (f.answer[i].checked) c = i;
		if (c == null)
		{
			alert("Maak eerst uw keuze uit een van de antwoorden.");
			return false;
		}
		else
			return true;
	}


 /* positioning extended */
	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;
	}

	function test()
	{
		alert(getWindowHeight())
	}

	function scaleColumn()
	{
		var headerElement = document.getElementById('pageHeader');
		var headerHeight = headerElement.offsetHeight;

		var columnsElement = document.getElementById('columns');
		columnsElement.style.height = (getWindowHeight() - headerHeight - 19 - 15) +"px"
	}