/* Browser check */
IS_DOM = (document.getElementById) ? true : false;
IS_IE = (document.all) ? true : false;
IS_IE50 = (navigator.userAgent.indexOf("IE 5.0") != -1);
IS_Mac = (navigator.appVersion.indexOf("Mac") != -1);

// preload level 1 buttons
var topLevelNav = new Array();
topLevelNav = ["", "about-us", "services", "pricing", "contact-us"];
for (var i = 0; i < topLevelNav.length; i++) { 
	eval("button" + i + "on = new Image();"); eval("button" + i + "off = new Image();");
	eval("button" + i + "on.src = \"" + sFolderDepth + "img/nav/" + topLevelNav[i] + "-on.gif\";");
	eval("button" + i + "off.src = \"" + sFolderDepth + "img/nav/" + topLevelNav[i] + "-off.gif\";");
	if (sSelectedNavigation == topLevelNav[i]) {
		eval("button" + i + "on.src = \"" + sFolderDepth + "img/nav/" + topLevelNav[i] + "-on.gif\";");
		eval("button" + i + "off.src = \"" + sFolderDepth + "img/nav/" + topLevelNav[i] + "-on.gif\";");
	}
}

// Image Swapping
function imgOn(imgName)
{
  if (IS_DOM) {
    document.getElementById(imgName).src = eval(imgName + "on.src");
  }
}
 
function imgOff(imgName)
{
  if (IS_DOM) {
    document.getElementById(imgName).src = eval(imgName + "off.src");
  }
}

function changeImages() 
{
  if (document.getElementById) {
    for (var i = 0; i < changeImages.arguments.length; i += 2) { 
  		document.getElementById(changeImages.arguments[i]).src = eval(changeImages.arguments[i + 1] + ".src"); 
	}
  }
}

// Get an ID 
function getThis(sId)
{
	var oObject;
	oObject = false;
	
	if (IS_DOM) {
		if (document.getElementById(sId)) {
			oObject = document.getElementById(sId);
		}
	}
	
	return oObject;
}

// Returns single element or multiple elements in an array
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements[elements.length] = element;
	}
	return elements;
}
	
// accessible popup functions, this will work with or without javascript enabled
// reference like this "<a href="popup.htm" onclick="popUp(this.href,'console',400,200);return false;" target="newWin" title="This link will pop open a new window">This is my link</a>"
	function popUp(strURL,strType,strHeight,strWidth,strWindow)
	{
	  var strOptions="";
	  if (strType=="console") {
	    strOptions="resizable,height=" + strHeight + ",width=" + strWidth;
	  }
	  if (strType=="fixed") {
	    strOptions="status,height=" + strHeight + ",width=" + strWidth;
	  }
	  if (strType=="elastic") {
	    strOptions="toolbar,menubar,scrollbars,resizable,location,height=" + strHeight + ",width=" + strWidth;
	  }
	  window.open(strURL, strWindow, strOptions);
	}

function centeredPopUpWindow(mypage, myname, w, h, scroll)
{
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}