function setClassname(id, classname) {
	document.getElementById(id).className = classname;
}

function getClassname(id) {
	return document.getElementById(id).className;
}

// this function is to show/hide a bubble by an specific divID
function configBubble(divID)
{
    if (divID == null)
        divID = 'divBubble';
        
    if (document.getElementById(divID).style.display == 'block')
        document.getElementById(divID).style.display = 'none'
    else
        document.getElementById(divID).style.display = 'block'
}