// JavaScript Document

<!--

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

function changeImages(id, newImg) {
  var img = document.getElementById(id);
  img.src = newImg;
	//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_enter_over = newImage("images/home_enter-over.gif");
		home_btn_over = newImage("images/home_btn-over.gif");
		advantages_btn_over = newImage("images/advantages_btn-over.gif");
		services_btn_over = newImage("images/services_btn-over.gif");
		contact_btn_over = newImage("images/contact_btn-over.gif");	
	}
	preloadFlag = true;
}

function showKey(whichKey,link) {
	obj = document.getElementById(whichKey);  
	obj.style.top = realPosY(link);
	obj.style.left = '302px';
	show(whichKey);
}

function show(id) {
  document.getElementById(id).style.display = 'block';
}
function hide(id) {
  document.getElementById(id).style.display = 'none';
}

function realPosY(element) {
  var y = 0;
  do {
    y += element.offsetTop || 0;
    element = element.offsetParent;
  } while (element);
  return y;
}

function cumulativeOffset(element) {
  var valueT = 0, valueL = 0;
  do {
    valueT += element.offsetTop  || 0;
    valueL += element.offsetLeft || 0;
    element = element.offsetParent;
  } while (element);
  return [valueL, valueT];
};


// -->