//check if client is netscape
var ns = navigator.appName.indexOf("Microsoft") == -1;

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		lauras11_over = newImage("/images/lauras11_over.gif");
		lauras12_over = newImage("/images/lauras12_over.gif");
		lauras13_over = newImage("/images/lauras13_over.gif");
		lauras14_over = newImage("/images/lauras14_over.gif");
		lauras15_over = newImage("/images/lauras15_over.gif");
		lauras16_over = newImage("/images/lauras16_over.gif");
		preloadFlag = true;
	}
}

function MM_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.getElementById(n); return x;
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function unsetAll(){
	changeImages('lauras11', '/images/lauras11.gif'); 
	MM_showHideLayers('menu_company','','hide');
	
	changeImages('lauras12', '/images/lauras12.gif'); 
	MM_showHideLayers('menu_technology','','hide');
	
	changeImages('lauras13', '/images/lauras13.gif'); 
	MM_showHideLayers('menu_hiv','','hide');
		
	changeImages('lauras14', '/images/lauras14.gif'); 
	MM_showHideLayers('menu_boards','','hide');
		
	changeImages('lauras15', '/images/lauras15.gif'); 
	MM_showHideLayers('menu_news','','hide');
}