// tick all checkboxes
function tickall(form,controller,groupname){
    
    var cntrl_el = document.getElementById(controller);
    if(cntrl_el.checked==true) 
        state = true; 
    else
        state = false;

    for (var i = 0; i < document.accountform.elements.length; i++) {
        if(document.accountform.elements[i].type=='checkbox' && document.accountform.elements[i].name.indexOf(groupname)!=-1) {    
            document.accountform.elements[i].checked=state;        
        }   
        
    } 
    //var c = document.getElementById(form).getElementsByTagName('input'); 
    //for (var i = 0; i < c.length; i++) {        
    //    if (c[i].type == 'checkbox' && c[i].name.indexOf(groupname)!=-1) {                                       
    //        c[i].checked = state; 
    //    } 
    //} 

}
function untick(form,controller,box){
    var cntrl_el = document.getElementById(controller);
    var el = document.getElementById(box);
    if(el.checked==false)     
        cntrl_el.checked=false;    
}