function toggleDisplayStyle(obj) 
{
    var el = document.getElementById(obj);
    if ( el.style.display != "none" ) {
        el.style.display = 'none';
    } else {
        el.style.display = '';
    }
}

function toggleExtraTextPlusMoreLink(obj1, obj2)
{
    toggleDisplayStyle(obj1);
    toggleDisplayStyle(obj2);
}

function toogleMoreText(textID)
{
    toggleDisplayStyle("readmore_"+textID);
    toggleDisplayStyle("readless_"+textID);
}

function hideAllExtraText() {
    var elem = document.getElementsByTagName('*');
    for(var i = 0; i < elem.length; i++)
    {
       // str += elem[i].id + "; ";
        
        if (elem[i].id.substring(0,8) == 'readmore') 
        {
            elem[i].style.display = 'none';
        }
    }
}