function Ouvrir_Popup(page,largeur,hauteur,options)
{
    var top=(screen.height-hauteur)/2;
    var left=(screen.width-largeur)/2;
    window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+"," + options);
}
function Ouvrir_Popup(page,largeur,hauteur)
{
    var top=(screen.height-hauteur)/2;
    var left=(screen.width-largeur)/2;
    window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+",scrollbars=yes");
}
function Transf_Trait_Off()
{
    document.getElementById('Transf_Trait').style.visibility="hidden";
}

function Transf_Trait_On()
{
    document.getElementById('Transf_Trait').style.visibility="visible";
}
function getElementsByClass(node,searchClass,tag) 
{
	var classElements = new Array();
	var els = node.getElementsByTagName(tag); // use "*" for all elements
	
	var elsLen = els.length;
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( searchClass == els[i].className) 
		{
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}