preloaded = 0;
var imageNames;
var imageOver;
graphicsDir = dirDepth+"IMAGES/";

if(document.images){
	imageNames = new initArray("button1", "button2", "button3", "button4", "button5", "button6");
	
	if(querystring("lang") == "en")
	{
		imageOver = new initArray("b_corp_02.gif", "b_port_02.gif", "b_solu_02.gif", "b_cont_02.gif", "b_home_02.gif", "b_login_02.gif");		
	}
	else
	{
		imageOver = new initArray("b_corp_02.gif", "b_port_02.gif", "b_solu_02_nl.gif", "b_cont_02.gif", "b_home_02.gif", "b_login_02.gif");
	}
}

function preloadImages(){
	var i, temp;

	if(document.images){
		for(i=0; i<imageNames.length; i++){
			document.images[imageNames[i]].offsrc = document.images[imageNames[i]].src;
		}


		for(i=0; i<imageNames.length; i++){
			temp = new Image();
			temp.src = graphicsDir + imageOver[i];
			document.images[imageNames[i]].oversrc = temp.src;
		}
		preloaded = 1;
	}
}

function initArray(){
	if (document.images){
		this.length = initArray.arguments.length;
		for (var i=0;i<= this.length; i++){
			this[i] = initArray.arguments[i];
		}
	}
}

function mouseOver(imageID) {
	if(document.images && preloaded){
		document.images[imageNames[imageID]].src = document.images[imageNames[imageID]].oversrc;
	}
}

function mouseOut(imageID) {
	if(document.images && preloaded){
		document.images[imageNames[imageID]].src = document.images[imageNames[imageID]].offsrc;
	}
}

function onBack(tdObj){
	tdObj.style.backgroundColor = "#ff9900";
}

function outBack(tdObj){
	tdObj.style.backgroundColor = "#cccccc";
}

function querystring(name)   // returns a named value from the querystring
{
   var tmp = unescape( location.search.substring(1) );
   var i   = tmp.toUpperCase().indexOf(name.toUpperCase()+"=");

   if ( i >= 0 )
   {
      tmp = tmp.substring( name.length+i+1 );
      i = tmp.indexOf("&");
      return( tmp = tmp.substring( 0, (i>=0) ? i : tmp.length ));
   }

   return("");
}