// JavaScript Document

function initRollovers() {
	
	var all_links;
	var link;
	var idx;
	var tmp_image;
	var section_id = getSectionId();

	if (!document.getElementsByTagName) {
		return;   
	}

	all_links = document.getElementsByTagName("a");

	for (idx = 0; idx < all_links.length; idx++) {

		link = all_links[idx];
	  
		if (link.className && (' ' + link.className + ' ').indexOf(' rollover ') != -1) {

			if (link.childNodes && link.childNodes.length == 1 && (link.childNodes[0].nodeName.toLowerCase() == 'img' || link.childNodes[0].nodeName.toLowerCase() == 'input')) {

				// Pre-load state 2 images
				tmp_image = new Image();
				tmp_image.src = link.childNodes[0].src.replace(/(\.[^.]+)$/, "_f1$1");

				if (link.childNodes[0].id && link.childNodes[0].id == section_id) {
					// Don't attach a listener. Instead, set rollover state permanently
					link.childNodes[0].src = link.childNodes[0].src.replace(/(\.[^.]+)$/, "_f2$1");
				} else {								
					// Attach listeners
					link.onmouseover = mouseover;
					link.onmouseout = mouseout;
					link.onfocus = mouseover;
					link.onblur = mouseout;
				}
			}
		}
		else if (link.parentNode.nodeName.toLowerCase() == 'li' 
			&& link.parentNode.parentNode.id == "topmenu"
			&& link.id == section_id) {
			link.className = "selected";
		}	
	}
}

function findTarget(e) {
	var target;
	
	if (window.event && window.event.srcElement) {
		target = window.event.srcElement;
	}
	else if (e && e.target) {
		target = e.target;	   
	}
	
	if (!target) return null;
	
	while (target != document.body && target.nodeName.toLowerCase() != "a") {
		target = target.parentNode;   
	}
	
	if (target.nodeName.toLowerCase() != "a") return null;
	
	return target;
}

function mouseover(e) {
	var target = findTarget(e);
	var img_tag;
	
	if (!target) return;
	
	img_tag = target.childNodes[0];
	
	if (img_tag.src.indexOf("_f1.") < 0) img_tag.src = img_tag.src.replace(/(\.[^.]+)$/, "_f1$1"); 
}

function mouseout(e) {
	var target = findTarget(e);
	var img_tag;
	
	if (!target) return;
	
	img_tag = target.childNodes[0];
	img_tag.src = img_tag.src.replace(/_f1(\.[^.]+)$/, "$1");   
}

function getSectionId() {

	   if (!document.getElementsByTagName) {
	      return;   
	   }

		var current_url = location.href;
		var baseRef = document.getElementsByTagName("base");
		var pattern;
		var regexp_results;
		
		if (baseRef.length > 0) {
		
			pattern = new RegExp("^" + baseRef[0].href + "((\\w|-)+)");
			regexp_results = pattern.exec(current_url);
			
			if (RegExp.$1) {
				return RegExp.$1;
			} else {
				return "";
			}		
		}
		else {
			return "";
		}
	}

/* 
Methods for resizing the flash stage at runtime.

setFlashWidth(divid, newW)
divid: id of the div containing the flash movie.
newW: new width for flash movie

setFlashWidth(divid, newH)
divid: id of the div containing the flash movie.
newH: new height for flash movie

setFlashSize(divid, newW, newH)
divid: id of the div containing the flash movie.
newW: new width for flash movie
newH: new height for flash movie

canResizeFlash()
returns true if browser supports resizing flash, false if not. 
*/

function setFlashWidth(divid, newW){
	document.getElementById(divid).style.width = newW+"px";
}
function setFlashHeight(divid, newH){
	document.getElementById(divid).style.height = newH+"px";		
}
function setFlashSize(divid, newW, newH){
	setFlashWidth(divid, newW);
	setFlashHeight(divid, newH);
}
function canResizeFlash(){
	var ua = navigator.userAgent.toLowerCase();
	var opera = ua.indexOf("opera");
	if( document.getElementById ){
		if(opera == -1) return true;
		else if(parseInt(ua.substr(opera+6, 1)) >= 7) return true;
	}
	return false;
}

function initPage() 
{
	initRollovers();
}

window.onload = initPage;