function showFlik(elementId){
	document.getElementById(elementId).style.background = "url(images/sliding-flik-right.png) no-repeat top right";
}

function hideFlik(elementId){
	document.getElementById(elementId).style.background = "";
}

function hideAll(){
	for (var i=0; i<4; i++) {
		document.getElementById("sliding"+i).style.background = "";
	}

}