// Trap Backspace(8) 

// Except bksp on text/textareas



if (typeof window.event != 'undefined') // IE

  document.onkeydown = function() // IE

    {

    var t=event.srcElement.type;

    var kc=event.keyCode;

    return ((kc != 8) || (t == 'textarea') || ( t == 'text'))

    }

else

  document.onkeypress = function(e)  // FireFox/Others 

    {

    var t=e.target.type;

    var kc=e.keyCode;

    if ((kc != 8) || (t == 'textarea') || ( t == 'text'))

        return true

    else {

        return false

    }

}