/**
 * Returns a constructed and unique id for the table
 */
function getGeneratedId(_element) {
	// the nodeType==9 is here for managing document
	if(_element==undefined || _element.nodeType==9) {
		return "";
	} else {
		var elementId = _element.id;
		if(elementId==undefined || elementId.length==0) {
			var parent = _element.parentNode;
			if((parent==undefined) || (parent==_element)) {
				return _element.nodeName;
			} else {
				var returned = getGeneratedId(parent);
				// Finding current element index
				var elementIndex = -1;
				for(var index=0; index<parent.childNodes.length && elementIndex==-1; index++) {
					if(parent.childNodes\[index\]==_element) {
						elementIndex=index;
					}
				}
				returned += "."+_element.nodeName+"_"+elementIndex;
//				alert("generating "+returned);
				_element.id = returned;
				return returned;
			}
		} else {
			return elementId;
		}
	}
}