//INITIALIZATION
///////////////////////////
var html = document.getElementsByTagName('html')[0];
jscss('add',html,'hasScript');
if ( detectFlash(6) ) jscss('add',html,'hasFlash');
//detectImages();

var hasReqdDOM = (document.getElementsByTagName && document.getElementById);

//alert( document.getElementsByTagName('html')[0].className )
function PageInit() {
	if ( !(hasReqdDOM) ) return;
	PopUpSafe( document.getElementsByTagName('a') );
	InitNavMenu('nav');
	Rollovers();
	
}
addEvent(window,'load',PageInit);

function initFlash() {
	if ( !document.getElementById || typeof(FlashObject) == 'undefined')  return;
	//myFlash = new FlashObject("/images/mp/sc_flash_final.swf", "flashy", "766", "209", 6.0, "#ffffff");
	//myFlash.addParam("wmode","opaque"); //fix bug with IE 5.x
	//myFlash.write("fl_replace");
}


function PopUpSafe(els) {
	if (!els) return;
	for (var i = 0; i < els.length; i++) {
		if (els[i].rel.indexOf("external") >= 0 ) {
			els[i].onclick = function() { return PopWin(this.href,'new'); }
		}
		else if (els[i].rel.indexOf(':') >= 0) {
			els[i].onclick = function() { args = this.rel.split(':'); return PopWin(this.href,args[0],args[1],args[2]); }
		}
	}
}

function InitNavMenu(menu) {
	var mn = document.getElementById(menu);
	var oldIE = (document.all && getIEVersion() < 7)
	if (!mn) return;
	
	var uls = mn.getElementsByTagName('ul');
	
	var fn_a = function() { this.navMenu.onactivate(); }
	var fn_d = function() { this.navMenu.ondeactivate(); }
	if (oldIE)	{
		fn_a = IEactive;
		fn_d = IEinactive;
	}
	for (var i = 0; i < uls.length; i++ ){
		uls[i].parentNode.navMenu = uls[i];
		uls[i]["onactivate"] = setLyr;
		uls[i]["ondeactivate"] = unsetLyr;
		uls[i].parentNode.onmouseover = fn_a;
		uls[i].parentNode.onmouseout = fn_d;
		uls[i].activator = getActivator(uls[i]);
		if ( oldIE ) {
			if (uls[i].parentNode.nodeName != 'DD') {
			uls[i].onmouseover = function() { if(this.activator) jscss('add',this.activator,"chsel"); };
			uls[i].onmouseout = function() { if(this.activator) jscss('remove',this.activator,"chsel");  };
			}
		}
	}
}

function setLyr() {
	if (this.parentNode.nodeName != "DD") {
	var cw = document.body.clientWidth || window.innerWidth;
	var diff = (findObjPos(this).dx + this.offsetWidth) - cw;
	if ( diff > 0 && findObjPos(this).dx < cw ) 
		this.style.left =  diff + "px";
	}
}
function unsetLyr() {
	this.style.left = null;
}

function IEactive() { jscss('add',this,"IEhover"); jscss('add',this.navMenu,"ddesc"); this.navMenu.onactivate(); }
function IEinactive() { jscss('remove',this,"IEhover"); jscss('remove',this.navMenu,"ddesc"); this.navMenu.ondeactivate(); }
function getActivator(n) {
	while(n.previousSibling ) {
		n = n.previousSibling;
		if( n.nodeName == "A" ) { return n; }
	}
	return null;
}
function getParentPos(tag,node) {
	var n = node;
	while (n.parentNode) {
		if (n.nodeName == tag) {
			return findObjPos(n);
		}
		n = n.parentNode;
	}
}
function getParentDist(tag,node) {
	var n = node;
	var d = 1
	while (n.parentNode) {
		if (n.parentNode.nodeName == tag) {
			return d/2;
		}
		n = n.parentNode;
		d++;
	}
}


//IMAGE ROLLOVERS
///////////////////////////
var over = new Object();
var out = new Object();
function Rollovers() {
	if (!document.images) return;
	var imgs, a;
	var func = getRollSrc;
	var idArr = getElementsByClass('rollover');
	for (i = 0; i < idArr.length; i++) {
		imgs = idArr[i];
		if ( imgs.id=='' || !imgs.id ) imgs.id = 'ro_'+i;
		out[ imgs.id ] = new Image();
		over[ imgs.id ] = new Image();
		out[ imgs.id ].src = imgs.src;
		over[ imgs.id ].src = func(imgs.src,1);
		a = imgs.parentNode;
		if ((a && a.nodeName.toLowerCase() == 'a') ){
			a.onmouseover = function() { this.childNodes[0].src = over[this.childNodes[0].id].src; }
			a.onmouseout = function() { this.childNodes[0].src = out[this.childNodes[0].id].src;  }
			a.onfocus = function() { this.childNodes[0].src = over[this.childNodes[0].id].src; }
			a.onblur = function() { this.childNodes[0].src = out[this.childNodes[0].id].src; }
		}
		else if (imgs.nodeName.toLowerCase() == 'input') {
			imgs.onmouseover = function() { this.src = over[this.id].src; }
			imgs.onmouseout = function() { this.src = out[this.id].src; }
		}
	}
}
function getRollSrc(src, hover) { return (hover) ? src.replace(/.(gif|jpg)/,"_m.$1") : src.replace(/_m.(gif|jpg)/,".$1"); }

//UTILITY FUNCTIONS
///////////////////////////
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}


//GENERAL PURPOSE FUNCTIONS
///////////////////////////
var wini; //Reference to a window
function PopWin(url, name, width, height) {
	var s;
	if (width || height) {
		h = (height) ? height : 600;
		w = (width) ? width : 800;
		lp = (screen.width) ? (screen.width-w)/2 : 0;
		tp = (screen.height) ? (screen.height-h)/2 : 0;
		sc = (name == 'gallery') ? 'no' : 'yes';
		s = 'height='+ h +',width='+ w +',top='+tp+',left='+lp+',scrollbars='+sc+',resizable';
	}
	else s = '';
	wini = window.open(url,name,s);
	if (wini) wini.focus();
	return ( !wini )
}// PopWin()

function getObj(objId) {
	var obj;
	if (document.getElementById)
		obj = document.getElementById(objId);
	else if (document.all)
		obj = document.all[objId];
	else
		obj = null;
	return obj;
}

function addEvent(obj,evType,fn){
	if(obj.addEventListener){
		obj.addEventListener(evType,fn,false);
	}
	else if(obj.attachEvent){
		var r=obj.attachEvent("on"+evType,fn);
	}
	else{
		if ( typeof( obj['on'+evType] ) == 'function' ) {
			var last = obj['on'+evType] ;
			obj['on'+evType] = null;
			obj['on'+evType] = function() { last(); fn(); };
		}
		else obj['on'+evType] = fn;
	}
}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function findObjPos(obj){
	var curtop = 0;
	var curleft = 0;
	if (obj.offsetParent) {
		while (obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y && obj.x) {
		curtop += obj.y;
		curleft += obj.x;
	}
	var t = new Object();
	t.dx = curleft;
	t.dy = curtop;
	return t;
}


// found at http://www.onlinetools.org/articles/unobtrusivejavascript/cssjsseparation.html
function jscss(a,o,c1,c2) {
  switch (a){
    case 'swap':
      o.className=!jscss('check',o,c1)?o.className.replace(c2,c1): o.className.replace(c1,c2);
    break;
    case 'add':
      if(!jscss('check',o,c1)){o.className+=o.className?' '+c1:c1;}
    break;
    case 'remove':
      var rep=o.className.match(' '+c1)?' '+c1:c1;
      o.className=o.className.replace(rep,'');
    break;
    case 'check':
      return new RegExp('\\b'+c1+'\\b').test(o.className)
    break;
  }
}



// FUNCTIONS NEEDED FOR VARIOUS DETECTIONS
///////////////////////////////////////////
function getIEVersion() {
  var rv = -1;
  if (navigator.appName == 'Microsoft Internet Explorer') {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}

function getFlashVersion() {
	var flashversion = 0;
	if (navigator.plugins && navigator.mimeTypes.length) {
		var x = navigator.plugins["Shockwave Flash"];
		if(x && x.description) {
			var y = x.description;
   			flashversion = y.charAt(y.indexOf('.')-1);
		}
	} else {
		result = false;
	    for(var i = 15; i >= 3 && result != true; i--){
   			execScript('on error resume next: result = IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.'+i+'"))','VBScript');
   			flashversion = i;
   		}
	}
	return flashversion;
}
function detectFlash(ver) { return (getFlashVersion() >= ver) ? true:false; }

function detectImages() {
	if (!document.getElementById ) return;
	jscss('add',html,'noImages');
	var detImg = new Image();
	var tmp = new Date();
	var suffix = tmp.getTime();
	detImg.src = '/images/blank.gif?'+ suffix;
	detImg.onload = function() { jscss('remove',html,'noImages');}
	
}