var menuItemsToHide = new Array('navi1', 'navi2', 'navi3', 'navi4', 'navi1Big', 'navi2Big', 'navi3Big');
var ulItemsToHide = new Array();

function showDiv(id) {
	if(document.getElementById(id)) {
		document.getElementById(id).style.visibility="visible";
	}
}

function showUl(id) {
	if(document.getElementById(id)) {
		document.getElementById(id).style.visibility="visible";
	}
}

function clearFields() {
	for(var i=0;i<menuItemsToHide.length;i++) {	
		hideDiv(menuItemsToHide[i]);
	}	
}

function hideDiv(id) {	
	if(document.getElementById(id)) {
		document.getElementById(id).style.visibility="hidden";
	}
}

function clearUls() {
	for(var i=0;i<ulItemsToHide.length;i++) {	
		hideUl(ulItemsToHide[i]);
	}	
}

function hideUl(id) {	
	if(document.getElementById(id)) {
		document.getElementById(id).style.visibility="hidden";
	}
}

var bodyOnloadArray = new Array();
function commonOnLoad(){
  var i = 0;
  for(i=0;i<bodyOnloadArray.length;i++){
    bodyOnloadArray[i]();
  }
}