SelectedTab = null;
SelectPage = false;

tab1 = new Image();
tab1on = new Image();
tab2 = new Image();
tab2on = new Image();
tab3 = new Image();
tab3on = new Image();
tab4 = new Image();
tab4on = new Image();
tab5 = new Image();
tab5on = new Image();


function init()
{
	frm = document.forms[0];
	preloadImages();
}


function ChangeTab(objTab)
{	
	ShowTabs = true;
	if(SelectedTab != null && objTab.id == SelectedTab)
	{
		ShowTabs = false;
	}

	if(ShowTabs)
	{
		switch(objTab.id)
		{
		case "Nieuws":
			if(objTab.src.indexOf("Tab"+ objTab.id +"On") > 0 ){objTab.src = tab1.src;}
			else{objTab.src = tab1on.src;}
			break;	
		case "Downloads":
			if(objTab.src.indexOf("Tab"+ objTab.id +"On") > 0 ){objTab.src = tab2.src;}
			else{objTab.src = tab2on.src;}	
			break;
		case "Faq":
			if(objTab.src.indexOf("Tab"+ objTab.id +"On") > 0 ){objTab.src = tab3.src;}
			else{objTab.src = tab3on.src;}	
			break;
		case "Links":
			if(objTab.src.indexOf("Tab"+ objTab.id +"On") > 0 ){objTab.src = tab4.src;}
			else{objTab.src = tab4on.src;}	
			break;
		case "Contact":
			if(objTab.src.indexOf("Tab"+ objTab.id +"On") > 0 ){objTab.src = tab5.src;}
			else{objTab.src = tab5on.src;}	
			break;
		}
	}

}

function openMenu(ChapterID)
{

		if(
		ChapterID == 24 ||
		ChapterID ==  26 ||
		ChapterID ==  27 ||
		ChapterID ==  28 ||
		ChapterID ==  30 ||
		ChapterID ==  31 ||
		ChapterID ==  32
		)
		{

			SelectPage = true;
			if(ChapterID.length > 0)
			{
				if(ChapterID > 1)
				{
				objItems = document.getElementById("Items"  + ChapterID)
				objItems.style.display = "";
				}
			}		
		}

}

function HighPage(PageID)
{

	if(PageID.length > 0 && SelectPage == true)
	{

		if(PageID > 1)
		{
		objLink = document.getElementById("PageLink"  + PageID)
		objLink.href = "#";
		objLink.className = "HighLink";
		}
	}
}

function HighTab(StrTabID)
{
	if(StrTabID.length > 0)
	{
		objTab = document.getElementById(StrTabID);
		objTab.src = "/Images/Tabs/Tab" +  StrTabID + "On.png";
		SelectedTab = StrTabID;		
		objLink = document.getElementById("Tab" + StrTabID + "Link");
		objLink.src = "#";
		
	}
}

function GotoPage(PageID)
{
	document.location = "/Internet/WebPages/ShowPage.asp?PageID=" + PageID;
}

function OpenMenu(ChapterID)
{
    objDiv = document.getElementById("Items" + ChapterID)
    if(objDiv.style.display == "none"){objDiv.style.display = "";}
    else{objDiv.style.display = "none";}
    
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		tab1  = newImage('/Images/Tabs/TabNieuwsOff.png');
		tab2  = newImage('/Images/Tabs/TabDownloadsOff.png');
		tab3  = newImage('/Images/Tabs/TabFaqOff.png');
		tab4  = newImage('/Images/Tabs/TabLinksOff.png');
		tab5  = newImage('/Images/Tabs/TabContactOff.png');

		tab1on = newImage('/Images/Tabs/TabNieuwsOn.png');
		tab2on = newImage('/Images/Tabs/TabDownloadsOn.png');
		tab3on = newImage('/Images/Tabs/TabFaqOn.png');
		tab4on = newImage('/Images/Tabs/TabLinksOn.png');
		tab5on = newImage('/Images/Tabs/TabContactOn.png');

		preloadFlag = true;
	}
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}
function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function SetSearchForm() {

    frm.action = "/Zoeken/Resultaten.asp?Search=searchbox";
    frm.onsubmit= "return true;"
    
}