Index: branches/unlabeled/unlabeled-1.1.2/core/admin_templates/js/grid_scroller.js
===================================================================
diff -u -r7029 -r7036
--- branches/unlabeled/unlabeled-1.1.2/core/admin_templates/js/grid_scroller.js	(.../grid_scroller.js)	(revision 7029)
+++ branches/unlabeled/unlabeled-1.1.2/core/admin_templates/js/grid_scroller.js	(.../grid_scroller.js)	(revision 7036)
@@ -181,7 +181,7 @@
 	for (var i=0; i<header_widths.length; i++)
 	{
 //		target = Math.max( Math.max(header_widths[i], data_widths[i]), footer_widths[i]);
-		var sum = header_widths[i]*header_cf*count + data_widths[i]*data_cf*count;
+		var sum = header_widths[i]*header_cf*count + (data_widths[i] ? data_widths[i]*data_cf*count : header_widths[i]*data_cf*count);
 //		alert('sum ('+i+') = '+header_widths[i]+' * '+header_cf+' * '+count+' + '+data_widths[i]+' * '+data_cf+' * '+count+' = '+sum)
 		if (this.HasFooter()) {
 			sum += footer_widths[i]*footer_cf*count;
@@ -343,6 +343,7 @@
 	}
 	var widths = new Array();
 	var style;
+	if (!table.rows[0]) return [];
 	for (var col=0; col<table.rows[0].cells.length; col++)
 	{
 		widths.push( table.rows[0].cells[col].clientWidth )