Forcing extra load of data in dynmaic grid without scrolling

Is there a way to tell the grid to load more data without scrolling? This is when the data comes dynamically from a script file.

You can simulate automatic call by using load command with necessary parameters
mygrid.load(“some.php?posStart=100&count=100”)

dhtmlxgrid 2.1 provide two additional methods for srnd mode
mygrid.enablePreRendering - allows to define count of extra records which will be loaded in addition to necessary ones
mygrid.forceFullLoading - force grid to load all not loaded yet data