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

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

function showBubble(elem) {
	elem.style.zIndex = 3;
	elem.getElementsByTagName('div')[0].style.display="block";
}
function hideBubble(elem) {
	elem.getElementsByTagName('div')[0].style.display="none";
	elem.style.zIndex = 1;
}
var isMaskDisplayed = false;
function displayMask() {
	var shownVal = "block";
	var hiddenVal = "hidden";
	
	if(isMaskDisplayed) {
		shownVal = "none";
		hiddenVal = "visible";
	}
		
	document.getElementById('popmask').style.display = shownVal ;
	isMaskDisplayed = !isMaskDisplayed;
	
	selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++)                                                                                             
			   selects[i].style.visibility = hiddenVal
}
	
var idprod = 0;
function showPopUp(id) {
	idprod = id;
	document.getElementById("mask").style.visibility ="visible";
	document.getElementById("popupdesc").style.display ="block";
	document.getElementById("pd"+id).style.display ="block";
	return false;
}

function hidePopUp() {
	document.getElementById("mask").style.visibility ="hidden";
	document.getElementById("popupdesc").style.display ="none";
	document.getElementById("pd"+idprod).style.display ="none";
	return false;
}