var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false; var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;

getViewportWidth = function() {
  var width = 0;
  if( document.documentElement && document.documentElement.clientWidth ) {
	width = document.documentElement.clientWidth;
  }
  else if( document.body && document.body.clientWidth ) {
	width = document.body.clientWidth;
  }
  else if( window.innerWidth ) {
	width = window.innerWidth - 18;
  }
  return width;
}

getViewportHeight = function() {
  var height = 0;
  if( document.documentElement && document.documentElement.clientHeight ) {
	height = document.documentElement.clientHeight;
  }
  else if( document.body && document.body.clientHeight ) {
	height = document.body.clientHeight;
  }
  else if( window.innerHeight ) {
	height = window.innerHeight - 18;
  }
  return height;
}

getViewportScrollY = function() {
  var scrollY = 0;
  if( document.documentElement && document.documentElement.scrollTop ) {
	scrollY = document.documentElement.scrollTop;
  }
  else if( document.body && document.body.scrollTop ) {
	scrollY = document.body.scrollTop;
  }
  else if( window.pageYOffset ) {
	scrollY = window.pageYOffset;
  }
  else if( window.scrollY ) {
	scrollY = window.scrollY;
  }
  return scrollY;
}


var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;
function hideDropDowns() {
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	var i = 1;
	var NewImage = '';
	for (i=1; i<13; i++)
	{
		if (document.getElementById('tab' + i))
		{
			if (document.getElementById('tab12'))
			{
				newImage = "url(../images/TG/bg_nav_li_a.png)";
			} else {
				newImage = "url(../images/GO/cat_downarrow.gif)";
			}
			document.getElementById('tab' + i).style.backgroundImage = newImage;
		}
	}
}
function showDropDown(tab) {
	mcancelclosetime();
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	ddmenuitem = document.getElementById('dropdown' + tab);
	ddmenuitem.style.visibility = 'visible';
	if (document.getElementById('newslett')) {
		var newImage = "url(../images/TG/bg_emailblock_off.jpg)";
		document.getElementById('newslett').style.backgroundImage = newImage;
	}
	var newImage = "url()";
	document.getElementById('tab' + tab).style.backgroundImage = newImage;
}
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}




function showDiv(divID) {
  var item = document.getElementById(divID);
  if (item) {
    item.className='unhidden';
  }
}

function hideDiv(divID) {
  var item = document.getElementById(divID);
  if (item) {
    item.className='hidden'
  }
}