function doeTab(welke){
	if(welke=='p'){
		document.getElementById('m').style.display='none';
		try{document.getElementById('e').style.display='none';}
		catch(e){}
		document.getElementById('tab_media').style.background='url(/img/tab.home.media.mo.gif)';
		try{document.getElementById('tab_events').style.background='url(/img/tab.home.events.mo.gif)';}
		catch(e){}
		document.getElementById('p').style.display='block';
		document.getElementById('tab_publications').style.background='url(/img/tab.home.publications.donker.gif)';
		}
	if(welke=='m'){
		document.getElementById('p').style.display='none';
		try{document.getElementById('e').style.display='none';}
		catch(e){}
		document.getElementById('tab_publications').style.background='url(/img/tab.home.publications.mo.gif)';
		try{document.getElementById('tab_events').style.background='url(/img/tab.home.events.mo.gif)';}
		catch(e){}
		document.getElementById('tab_media').style.background='url(/img/tab.home.media.donker.gif)';
		document.getElementById('m').style.display='block';
		}
	if(welke=='e'){
		document.getElementById('m').style.display='none';
		document.getElementById('p').style.display='none';
		document.getElementById('tab_media').style.background='url(/img/tab.home.media.mo.gif)';
		document.getElementById('tab_publications').style.background='url(/img/tab.home.publications.mo.gif)';
		document.getElementById('tab_events').style.background='url(/img/tab.home.events.donker.gif)';
		document.getElementById('e').style.display='block';
		}
	}