/**
 * @author ovidiuroatis
 */
 
 var total=3;
interval = 4;
var current = RanSpan(0,total);

function change()
{
	var temp = "q"+current;
	
	document.getElementById(temp).style.display = "none";	
	
	current++;
	
	if(current > total)
		current=0;
	
	temp = "q"+current;
		
	document.getElementById(temp).style.display = "block";		

	setTimeout(change,interval*1000);
}


function Random(X) 
{
    return Math.floor(X * (Math.random() % 1));
}

function Randum(X)
 {
    return X * (Math.random() % 1) | 0;
}

function RanSpan(MinV, MaxV) 
{
    return MinV + Random(MaxV - MinV + 1);
}