function registerEnter(box, link)
{
    var boximp = document.getElementById(box);
    boximp.assocLink = link;
    boximp.onkeypress = function(e)
    {
        if(isEnter(e)){
            var post = document.getElementById(this.assocLink).href.replace("javascript:","");
            post = new Function(post + ";");
            post();
            return false;
        }
    };
}
function isEnter(e)
{
    var keynum;


    if(window.event) // IE
    {
      keynum = e.keyCode;
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
      keynum = e.which;
    }
    if(keynum == 13)
    {
        if(navigator.appName == 'Microsoft Internet Explorer')
            e.keyCode = 0;
        return true;
    }
    else
    {
        return false;
    }
}