I have a jqGrid treegrid with about 40 columns so there is a large horizontal scroll bar (depending on the size of the browser). The issue is since the width is so large, w
Position the container of the loading message in a fixed position with the top and left assigned to around 40%-60%. That would fix it
It should be something like that :
.loading-message-container { position : fixed; top:50%; left: 45%; }