function updateParent(newURL) {
    opener.window.focus();
    opener.document.location = newURL;
  }
  function focusThis() {
    focus();
  }
  function changetoParent(newURL) {
    opener.window.focus();
    opener.document.location = newURL;
    window.close();
  }
  function DoConfirm(message) {
    return confirm(message);
  }
  function OpenWindow(theURL,winName,features) { //v2.0
    var winheight = screen.height;
    var winwidth = screen.width;
    
    NewWindow=window.open(theURL,winName,features);
  }
  function OpenWindowAutoSize(theURL,winName,features) {
    var winheight = screen.height;
    var winwidth = screen.width;
    
    if (winwidth <= 640) {
      var wheight = 350;
      var wwidth = 600;
    }
    else if (winwidth <= 800) {
      var wheight = 500;
      var wwidth = 700;
    }
    else if (winwidth <= 1024) {
      var wheight = 726;
      var wwidth = 1000;
    }
    else if (winwidth <= 1600) {
      var wheight = 1120;
      var wwidth = 1580;
    }
    else {
      var wheight = 500;
      var wwidth = 700;
    }
    
    NewWindow=window.open(theURL,winName,'height=' + wheight + ',width=' + wwidth + ',' + features);
  }  
  function FocusonBox(w) {
    w.focus();
  }
  function swapImgRestore() { //v3.0
    var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
  }
  function findObj(n, d) { //v3.0
    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=findObj(n,d.layers[i].document); return x;
  }
  function swapImage() { //v3.0
    var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
    if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
  }
  
  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) {
			home_over = newImage("images/nav/home_over.gif");
			speakers_over = newImage("images/nav/speakers_over.gif");
			reg_over = newImage("images/nav/reg_over.gif");
			schedule_over = newImage("images/nav/schedule_over.gif");
			preloadFlag = true;
		}
	}