/***************************************************************************
	Helpers
****************************************************************************/
function ShowLayer(id) {
	var element = document.getElementById(id);
	element.style.display = "";
}

function HideLayer(id) {
	var element = document.getElementById(id);
	element.style.display = "none";
}

function OddLayer(id) {
	var element = document.getElementById(id);
	if(element.style.display == "none") {
		element.style.display = "";
	} else {
		element.style.display = "none";
	}
}

function SearchTrigger() {
	var fieldElement = document.getElementById("searchField");
	location.href = "/default.asp?id=9&searchPhrase="+fieldElement.value;
}

function SearchKeyHandler() {
	if(window.event) {
		if(window.event.keyCode==13) {
			SearchTrigger();
		}
	}
}

/***************************************************************************
	Slides (fading pictures routine by Sune Boeegh)
****************************************************************************/
var ImageArr = new Array();
var ImageElements = new Array();
var InitialNumberOfImages = 8;
var ImagesClickable = true;
var ImageSlideBlendFilter = false;
var ImageSlideTimeEvery = 5;

function StartSliding() {
	// preload
	for(var foo=0; foo<ImageArr.length; foo++) {
		ImageArr[foo].imageObject = new Image(); ImageArr[foo].imageObject.src = ImageArr[foo].src;
	}

	// initialize target elements
	var imgColl = document.getElementsByTagName("IMG");
	for(var foo=0; foo<imgColl.length; foo++) {
		if(imgColl[foo].className=="slideImage") {
			ImageElements[ImageElements.length] = imgColl[foo];
			if(ImagesClickable) {
				imgColl[foo].onclick = HandleSlideClick;
				imgColl[foo].style.cursor = "hand";
			}
		}
	}

	if(imgColl.length>0) {
		try {
			var filTest = imgColl[0].filters.blendTrans;
			ImageSlideBlendFilter = true;
		} catch(exBlend) {
			ImageSlideBlendFilter = false;
		}
	}

	for(var foo=0; foo<InitialNumberOfImages; foo++) {
		ImageArr[foo].active = true;
	}
	// window.onerror = StartSliding;
	window.setTimeout("ChangeSlide()",ImageSlideTimeEvery*1000);
}	

function HandleSlideClick() {
	if(window.event && ImagesClickable) {
		var srcString = window.event.srcElement.src;
		srcString = srcString.replace(/\/slides\//i, "/bigSlides/");
		var leftPos, topPos;
		if(screen.width) {
			topPos = Math.round((screen.height-617)/2);
			leftPos = Math.round((screen.width-617)/2);
		}
		var winHandle = window.open("javascript:''", "showSlide", "width=617,height=617,left="+leftPos+",top="+topPos);
		var winDoc = winHandle.document;
		winDoc.open();
		winDoc.write("<html><body style=\"margin:0px;padding:0px\">");
		winDoc.write("<img src=\""+srcString+"\">");
		winDoc.write("</body></html>");
		winDoc.close();
		winHandle.focus();
	}
}

var randomElement;
function RemovePath(str) {
	return str.substring(str.lastIndexOf("/")+1, str.length);
}


function ChangeSlide() {
	var passiveSlides = new Array();
	for(var foo=0; foo<ImageArr.length; foo++) {
		if(ImageArr[foo].active==false) {
			passiveSlides[passiveSlides.length] = ImageArr[foo];
		}
	}
						
	if(passiveSlides.length>0 || ImageElements.length==1) {
		randomElement = ImageElements[Math.floor(Math.random()*ImageElements.length)];
		var oldSrc = randomElement.src;
		var randomSlide = passiveSlides[Math.floor(Math.random()*passiveSlides.length)];

		for(var foo=0; foo<ImageArr.length; foo++) {
			if(RemovePath(ImageArr[foo].src)==RemovePath(oldSrc)) {
				ImageArr[foo].active = false;
			}
			if(RemovePath(ImageArr[foo].src)==RemovePath(randomSlide.src)) {
				ImageArr[foo].active = true;
			}
		}
		
		if(ImageSlideBlendFilter) {
			randomElement.filters.blendTrans.apply();
		}
		randomElement.attachEvent("onreadystatechange", SlideHandleReadyState);
		randomElement.src = randomSlide.src;
	}
}

function SlideHandleReadyState() {
	var element = window.event.srcElement;
	if(element.readyState=="complete") {
		element.detachEvent("onreadystatechange", SlideHandleReadyState);
		if(ImageSlideBlendFilter) {
			element.filters.blendTrans.play();
			window.setTimeout("ChangeSlide()",ImageSlideTimeEvery*1000);
		}
	}
}
