function ayudaTooltip(objeto, texto, opt_position){
            var capita = document.getElementById('tooltip');
            var iframe = document.getElementById('tooltipIFrame');
            var botonCerrar = "<div align=\"right\"><a href=\"#\" onClick=\"overlayclose('tooltip'); return false\" border='0' style=\"text-decoration: none; color: #6b6a70\">X</a></div>";
            
            capita.innerHTML = botonCerrar + texto;        
            return overlay(objeto, 'tooltip', opt_position, 'tooltipIFrame');
        
        }
    



function getposOffset(overlay, offsettype){
    var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;
    var parentEl=overlay.offsetParent;
    while (parentEl!=null){
        totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
        parentEl=parentEl.offsetParent;
    }
    return totaloffset;
}

function overlay(curobj, subobjstr, opt_position, iframe){
    if (document.getElementById){
        var subobj=document.getElementById(subobjstr)
        subobj.style.display=(subobj.style.display!="block")? "block" : "none"
        var xpos=getposOffset(curobj, "left")+((typeof opt_position!="undefined" && opt_position.indexOf("right")!=-1)? -(subobj.offsetWidth-curobj.offsetWidth) : 0) 
        var ypos=getposOffset(curobj, "top")+((typeof opt_position!="undefined" && opt_position.indexOf("bottom")!=-1)? curobj.offsetHeight : 0)
        var iframe = document.getElementById(iframe);
        subobj.style.left=xpos+"px";
        subobj.style.top=ypos+"px";
        iframe.style.width = subobj.offsetWidth;
        iframe.style.height = subobj.offsetHeight;
        iframe.style.top = subobj.style.top;
        iframe.style.left = subobj.style.left;
        iframe.style.zIndex = subobj.style.zIndex - 1;
        iframe.style.display = "block";
        return false;
    } else
        return true
}

function overlayclose(subobj){
    document.getElementById(subobj).style.display="none";
    document.getElementById('tooltipIFrame').style.display = "none";
}