rem: var control = document.getElementById(label.htmlFor); 
add: var control = ORBEON.util.Dom.getElementById(label.htmlFor); 
context:     mouseover: function(event) {        var target = ORBEON.xforms.Events._findParentXFormsControl(YAHOO.util.Event.getTarget(event));        if (target != null) {            if (ORBEON.util.Dom.hasClass(target, "xforms-help-image")) {                // Show help tool-tip                var label = target.nextSibling;                while (!ORBEON.util.Dom.isElement(label)) label = target.nextSibling;                var control = document.getElementById(label.htmlFor);                ORBEON.xforms.Events._showToolTip(event, label, "xforms-help", ORBEON.xforms.Controls.getHelpMessage(control));            } else if (ORBEON.util.Dom.hasClass(target, "xforms-alert-active")) {                var control = document.getElementById(target.htmlFor);                var message = ORBEON.xforms.Controls.getAlertMessage(control);                if (message != "") {                    // Show alert tool-tip                    ORBEON.xforms.Events._showToolTip(event, target, "xforms-alert", ORBEON.xforms.Controls.getAlertMessage(control));                }            }        }    },
meta: 7801	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7801/58f774b831fe409c94e9200f2ac06c01bdc56f81/xforms.js/buggy/src/resources-packaged/ops/javascript/xforms.js