// return "id" object on all browsers
    function getObject(id) {
        if(document.getElementById) {
            obj = document.getElementById(id);
        }
        else if(document.all) {
            obj = document.all.item(id);
        }
        else {
            obj = null;
        }
        return obj;
    }
   
    function showTab(id) {
  	idTab="home-" + id;
	idImg="tab-" + id;
	
	hideTab();						
	document.getElementById(idTab).style.display='block';
	document.getElementById(idImg).src="/_layouts/Images/polinte/" + id + "_on.gif";
	switch(id) {	
		case "nieuws": document.getElementById('tab-nieuws2').src="/_layouts/Images/polinte/nieuws2_on.gif";break;	
		case "publicaties": document.getElementById('tab-agenda2').src="/_layouts/Images/polinte/publicaties2_on.gif";document.getElementById('tab-vacatures2').src="/_layouts/Images/polinte/vacatures2_on.gif";break;
		case "vacatures": document.getElementById('tab-vacatures2').src="/_layouts/Images/polinte/publicaties2_on.gif";break;
		case "agenda": document.getElementById('tab-nieuws2').src="/_layouts/Images/polinte/agenda2_on.gif";document.getElementById('tab-agenda2').src="/_layouts/Images/polinte/nieuws2_on.gif";;break;
	}
	
	
}

function hideTab() {
	document.getElementById("home-nieuws").style.display='none';
	document.getElementById("home-publicaties").style.display='none';
	document.getElementById("home-vacatures").style.display='none';
	document.getElementById("home-agenda").style.display='none';
	
	document.getElementById("tab-nieuws").src="/_layouts/Images/polinte/nieuws_off.gif";
	document.getElementById("tab-publicaties").src="/_layouts/Images/polinte/publicaties_off.gif";
	document.getElementById("tab-vacatures").src="/_layouts/Images/polinte/vacatures_off.gif";
	document.getElementById("tab-agenda").src="/_layouts/Images/polinte/agenda_off.gif";
	
	document.getElementById("tab-agenda2").src="/_layouts/Images/polinte/nieuws3_off.gif";
	document.getElementById("tab-nieuws2").src="/_layouts/Images/polinte/nieuws3_off.gif";
	document.getElementById("tab-vacatures2").src="/_layouts/Images/polinte/nieuws3_off.gif";
}