function lib_bwcheck(){ //Browsercheck (needed)
	this.ver=navigator.appVersion
	this.agent=navigator.userAgent
	this.dom=document.getElementById?1:0
	this.opera5=this.agent.indexOf("Opera 5")>-1
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
	return this
}
var bw=new lib_bwcheck();

function popupImage(sPicURL) {
	window.open( "popup.php?img="+sPicURL, "",  "resizable=1,HEIGHT=10,WIDTH=10");
}

function setMenuOver(menu){
	menu.className='menuItemOver';
}
function setMenuOut(menu){
	menu.className='menuItem';
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

var imageNum = 8;
var currImage = 5;
function swapThumbnail(){

	var oProductImage = document.getElementById('collage');
	imageUrl = 'img/collage' + (currImage % imageNum) + '.jpg';

	if (bw.ie6 || bw.ie5) {
		oProductImage.style.filter = "progid:DXImageTransform.Microsoft.Barn(orientation='horizontal',motion='in')";
		oProductImage.filters[0].Apply(); 
		oProductImage.src = imageUrl;
		oProductImage.filters[0].Play(); 
	} else {
		oProductImage.src = imageUrl;
	}
	
	currImage++;
}

// submenus
function positionSubmenu(menuNumber) {
	var parentMenu = document.getElementById('menuItem'+menuNumber)
	if (parentMenu) {
		var parentMenuLeft = findPos(parentMenu)[0];
		var subMenu = document.getElementById('subMenu'+menuNumber)
		if (subMenu){
			subMenu.style.left = (parentMenuLeft - menuPositionCorrection)+'px';
		}
	}
}

function showMenu(menuNumber){
	var subMenu = document.getElementById('subMenu'+menuNumber)
	if (subMenu) {
		subMenu.style.visibility = 'visible';
		currMenuOn = menuNumber;
	}
}

function hideMenu(menuNumber){
	var subMenu = document.getElementById('subMenu'+menuNumber)
	if (subMenu) {
		subMenu.style.visibility = 'hidden';	
	}
}

function findPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	return [curleft,curtop];
}

function hideMenus() {
	hideMenu(currMenuOn);
	currMenuOn = 0;
}
var currMenuOn = 0;
var menuPositionCorrection = -5;
/*
if(bw.ie6) {
	menuPositionCorrection = 550;	
}
*/