var ie = document.all ? 1 : 0;
var ns = document.layers ? 1 : 0;
var mac = ((navigator.appVersion.indexOf("Mac") != -1)) ? 1 : 0;
var pc = ((navigator.appVersion.indexOf("Mac") == -1)) ? 1 : 0;

function openNewWin(theURL,winName,features) 
  {
  window.open(theURL,winName,features);
  }

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)
      {
			if (document[changeImages.arguments[i]] != null)
				{
				document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1]).src;
				}
			else
				{
				getElement(changeImages.arguments[i]).src = eval(changeImages.arguments[i+1]).src;
				}
      }
    }
  }

function getElement(id) {
	if (document.getElementById) {
		return document.getElementById(id);
	} else if (document.all) {
		return document.all[id];
	} else if (document.layers) {
		var name = id;
		var index = name.indexOf('_');
		if (index>=0) {
			var len = name.length;
			name = name.substring(0, index)+":"+name.substring(index+1, len);
		}
		return document.forms[1].elements[name];
	}
	return id;
}

function openTerms() {
	openPopPage(160, 600, 500, "scrollbars=1");
}

function openPrivacy() {
	openPopPage(159, 600, 500, "scrollbars=1");
}

function openPayPerAd() {
	openPopPage(197, 600, 500, "scrollbars=1");
}

function openPayPerClick() {
	openPopPage(198, 600, 500, "scrollbars=1");
}

function openPopPage(pageId, width, height, feature) {
	feature += ",width=" + width + ",innerWidth=" + width;
	feature += ",height=" + height + ",innerHeight=" + height;
	if (window.screen) {
		var ah = screen.availHeight - 30;
		var aw = screen.availWidth - 10;
		var xc = (aw - width) / 2;
		var yc = (ah - height) / 2;
		feature += ",left=" + xc + ",screenX=" + xc;
		feature += ",top=" + yc + ",screenY=" + yc;
	}
	window.open("/pop_page.asp?pageid="+pageId,"jobahoy",feature);
}

var preloadFlag = false;

if (document.images) {
	// preload navigation button images
	// Main Menu
	job_search_st = newImage("/images/MainMenu/job_search.gif");
	job_search_ov = newImage("/images/MainMenu/job_search_ov.gif");
	place_ads_st = newImage("/images/MainMenu/place_ads.gif");
	place_ads_ov = newImage("/images/MainMenu/place_ads_ov.gif");
	job_seeker_st = newImage("/images/MainMenu/job_seeker.gif");
	job_seeker_ov = newImage("/images/MainMenu/job_seeker_ov.gif");
	resume_search_st = newImage("/images/MainMenu/resume_search.gif");
	resume_search_ov = newImage("/images/MainMenu/resume_search_ov.gif");
	
	preloadFlag = true;
	}