i want force enable gird paing with toolbar

my webpage get large dataset from database .
I use grid method enablePaging
this is good ,but some query spend too much time .

so i try prevent paging event and manually paging (database query paging + toolbar button). however i don’t know toolbar buttons force enable ,disable

this is code of force change image .
i change inactive image to active image , but button is disable so not work…

function grd_OnPaging(count) {
    grd.aToolBar.base.childNodes[0].childNodes[0].src = ".dhtmlxGrid/codebase/imgs/ar_left_abs.gif"
    //grd.aToolBar.base.childNodes[0].allowClick = true;
    grd.aToolBar.base.childNodes[0].className = "dhx_toolbar_btn def"
    return true;
}

help me…

Paging actions can be customized using the events.
onBeforePageChanged, onPageChanged, onPaging
docs.dhtmlx.com/doku.php?id=dhtm … agechanged
docs.dhtmlx.com/doku.php?id=dhtm … agechanged
docs.dhtmlx.com/doku.php?id=dhtm … t_onpaging