function returnObjById( id ) 
{ 
    if (document.getElementById) 
        var returnVar = document.getElementById(id); 
    else if (document.all) 
        var returnVar = document.all[id]; 
    else if (document.layers) 
        var returnVar = document.layers[id]; 
    return returnVar; 
}


function reinitSrc( id, trueSrc) {
	if (returnObjById(id).src != trueSrc) returnObjById(id).src = trueSrc;
	return false;
}

function dropdownup(divId) {
	if (document.getElementById(divId).className=='dropup') {
		document.getElementById(divId).className = 'dropdown';
		document.getElementById(divId+'_DDULabel').innerHTML = "> lire la suite";
	} else {
		document.getElementById(divId).className = 'dropup';
		document.getElementById(divId+'_DDULabel').innerHTML = "< replier le texte";
	}
}