// from dreamweaver --------------------------------------------------------

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_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_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];}
}

// helper functions -----------------------------------------------------------


// preload all navbar rollover images
function PreloadNavBar()
{
	MM_preloadImages(
		'img/nav2/nav_home_hi.gif',
		'img/nav2/nav_tyres_hi.gif',
		'img/nav2/nav_wheels_hi.gif',
		'img/nav2/nav_about_hi.gif',
		'img/nav2/nav_advice_hi.gif',
		'img/nav2/nav_dealer_hi.gif',
		'img/nav2/nav_contact_hi.gif',
		'img/nav2/nav_download_hi.gif',
		'img/nav2/nav_news_hi.gif',
		'img/nav2/nav_trade_hi.gif');
	MM_preloadImages('img/nav/navgray.gif');
}

// Show/hide items that should only be visible/hidden if javascript is on
function SetVisibilityForJS()
{
	var rulelist;
	for ( s = 0 ; s < document.styleSheets.length ; s++){
		// IE uses rules, Moz uses cssRules
		rulelist = (document.styleSheets[s].rules != null) ? document.styleSheets[s].rules : document.styleSheets[s].cssRules;
		for ( r = 0 ; r < rulelist.length; r++){
			if(rulelist[r].selectorText == ".VisibleWithJS")
				rulelist[r].style.visibility = "visible";
			if(rulelist[r].selectorText == ".HiddenWithJS")
				rulelist[r].style.visibility = "hidden";
		}
	}
}

function SetVisible(sID, bShow){
	var obj = GetElement(sID);
	if(obj != null)
		obj.style.visibility = bShow ? "visible" : "hidden";
}
function SetDisplay(sID, bShow, bBlock){
	var obj = GetElement(sID);
	if(bBlock == null)
		bBlock = true;
	if(obj != null)
		obj.style.display = bShow ? (bBlock ? "block" : "inline") : "none";
}