//image rollover
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) {
		nav_home_ = newImage("img/nav_home_.gif");
		nav_space_ = newImage("img/nav_available-space_.gif");
		nav_location_ = newImage("img/nav_location_.gif");
		nav_building_ = newImage("img/nav_building-info_.gif");
		nav_tenants_ = newImage("img/nav_tenants_.gif");
		nav_photos_ = newImage("img/nav_photo-gallery_.gif");
		nav_contact_ = newImage("img/nav_contact-us_.gif");
		preloadFlag = true;
	}
}

function popUp(URL, winwidth, winheight){
  var extwin = window.open(URL,'newWin','toolbar=0,location=0,menubar=0,status=0,resizable=0,scrollbars=0,width='+winwidth+',height='+winheight);
  extwin.focus();
 }