I am using new msgbox control
I want the functionality somthing like this (same as traditional confirm("") function in Javascript)

function DeleteAll()
{
if(confirm("Do u want to delete all records?") == true)
{
//Do Something;
return true;
}
else
{
//Do Something;
return false;
}
}

Now instead of confirm function() I want to use msg box control.As per the documentation I need to write separate funtion to handle user action(ok/cancel) as following

function DeleteAll()
{
eo_MsgBox(
"MsgBox1","Hello","This is a test message.",null,
[
{
Text: "OK", //OK button
//ClientSideHandler: "on_button_clicked" //Client side event handler
},

{
Text: "Cancel", //Cancel button
//ClientSideHandler: "on_button_clicked" //Client side event handler
}
]);
}

function on_button_clicked(msgBox, buttonIndex)
{
if(buttonIndex == 0)
{
//Do Something;
return true;

}
else
{
//Do Something;
return false;
}
}

Instead of this I want to use single function(just like javascript confirm()). Can we achive the same using existing functionality of msgbox? If not can you provide the return value facility for the msgbox?