function toggleTab(tab)
{
	var tabContent=getElementsByClassName('tabcontent');
	for(i=0;i<tabContent.length;i++)
	{
		if (tabContent[i].id==tab.id+'_content')
		{
			if (tabContent[i].style.visibility=='visible')
			{
				hideDiv(tabContent[i]);
				document.getElementById('tabs').style.backgroundImage='url(/images/tab-closed.gif)';
			}
			else
			{
				showDiv(tabContent[i]);
				document.getElementById('tabs').style.backgroundImage='url(/images/tab-'+tab.id+'.gif)';
			}
		}
		else
		{
			hideDiv(tabContent[i]);
		}
	}
}
function hideDiv(divId)
{
	divId.style.visibility='hidden';
	divId.style.display='none';
}
function showDiv(divId)
{
	divId.style.visibility='visible';
	divId.style.display='block';
}
function getElementsByClassName(clsName)
{
	var elementsByClassName = new Array();
	var allElems=document.getElementsByTagName("*");
	var t=0;
	for(j=0;j<allElems.length;j++)
	{
		
		if(allElems[j].className==clsName || allElems[j].className==clsName + ' visible')
		{
			elementsByClassName[t]=allElems[j];
			t++;
		}
	}
	return elementsByClassName;
}

function geefMailLink(domeinStr, prefixStr)
{
  var url;
  url = domeinStr;
	url = '@' + url;
	url = prefixStr + url;
  return url;
}

function openMailLink(domeinStr, prefixStr)
{
  var url = 'mailto:'+geefMailLink(domeinStr, prefixStr);
  window.open( url );
}

function displayMailLink(hrefHtmlObj, domeinStr, prefixStr)
{
   hrefHtmlObj.innerHTML = geefMailLink(domeinStr, prefixStr);
}

function openPopup(sUrl, sWindowName)
{
  openPopup2(sUrl, sWindowName, 1024, 768);
}
function openPopup2(sUrl, sWindowName, iWidth, iHeight)
{
  var win = window.open(sUrl, sWindowName,'menubar=0,location=0,toolbar=0,scrollbars=1,resizable=0,status=0,width='+iWidth+',height='+iHeight+',top=0,left=0');
  win.focus();
}