function showHide(showId,hideId){
	document.getElementById(hideId).style.display = "none";
	document.getElementById(showId).style.display = "";
	
	if(showId == "dossiers"){
		document.getElementById('tabshome').style.backgroundImage = "url(art/graphics/tabs_home_dossiers.gif)";
	}else if(showId == "nieuws"){
		document.getElementById('tabshome').style.backgroundImage = "url(art/graphics/tabs_home.gif)";
	}
}