function grid_bgr_color(obj, color, excep) 
{
    obj.style.cursor='pointer';
    if(obj.className!=excep)
    {
        obj.className=color;
    }
}

function grid_bgr_color_check(obj, color, old) 
{

    if(obj.className==color)
    {
        obj.className=old;
    }
    else
    {
        obj.className=color;
    }
}

function grid_checkbox(id)
{     
    if(document.getElementById(id))
    {  
        if(document.getElementById(id).checked)
        { 
            document.getElementById(id).checked = false;
        }
        else
        { 
            document.getElementById(id).checked =true;
        }
    }
}