/**
 * @author lsilbernagel
 */

function showMenu(menuItem){
	
	var i = 0;
	var itemNumber = 3;
	
	for(i = 0;i<itemNumber;i++) {
	
		if (menuItem == i) {
			document.getElementById("item_" + i).className = "visible";
		}
		else{
			document.getElementById("item_" + i).className = "hidden";	
		}
	}
	
}