function repos_calque(posx,layerName)
{
	if (document.all)
	{
    	if (document.body.clientWidth<760) posXmenu = posx;
    	else
    	{
    		posXmenu = (document.body.clientWidth-760);
    		posXmenu = posXmenu/2;
    		posXmenu = posXmenu+posx;
    	}
    	document.getElementById(layerName).style.left=posXmenu;
	}
	else
	{
		if (window.innerWidth<760) posXmenu = posx;
		else
		{
			posXmenu = (window.innerWidth-760);
			posXmenu = posXmenu/2;
			posXmenu = posXmenu+posx;
		}
		document.layers[layerName].left=posXmenu-8;
	}
	return posXmenu+"px";
}