function LoadPageHeight(divMainContent) {
    var whitepage = Get("whitepage");
    var sideMenu = Get("sideMenu");
 //   var divMainContent = Get("<%= divMainContent.ClientID %>");
    var height = whitepage.offsetHeight;
    var minheight = 696;

    if (height < minheight)
        whitepage.style.height = minheight + "px";

    if (sideMenu) {
        var sideMenuHeight = sideMenu.offsetHeight;
        if (sideMenuHeight > divMainContent.offsetHeight)
            divMainContent.style.height = sideMenuHeight + "px";

        if (sideMenuHeight < whitepage.offsetHeight)
            sideMenu.style.height = divMainContent.offsetHeight + "px";
    }
}