1 Sys.UI.DomEvent._ensureDomNode = function Sys$UI$DomEvent$_ensureDomNode(element) {
2 if (element.tagName && (element.tagName === "SCRIPT")) return;
3
4 var doc = element.ownerDocument || element.document || element;
5 if ((typeof(element.document) !== 'object') && (element != doc) && (typeof(element.nodeType) !== 'number')) {
6 throw Error.argument("element", Sys.Res.argumentDomNode);
7 }
8 }