function pokaz(ref) {
	if (ref) document.getElementById(ref).style.display = 'block';	
}

function ukryj(ref) {
	if (ref) document.getElementById(ref).style.display = 'none';	
}

function nS(user,domain) {
         locationstring = "mailto:" + user + "@" + domain;
         window.location = locationstring;
} 
function getElementHeight(Elem) {
	
		if(document.getElementById) {
			var elem = document.getElementById(Elem);
		} else if (document.all){
			var elem = document.all[Elem];
		}
		
		yPos = elem.offsetHeight;
		
		return yPos;
} 

function getElementWidth(Elem) {
	
		if(document.getElementById) {
			var elem = document.getElementById(Elem);
		} else if (document.all){
			var elem = document.all[Elem];
		}
		
		xPos = elem.offsetWidth;
		
		return xPos;
}