function showitem (objectid) {

    var o = document.getElementById (objectid);

    if (o == null) {
    } else {
        o.style.display = "block";
    }

 }


 function hideitem (objectid) {

     var o = document.getElementById (objectid);

     if (o == null) {

     }
     else {
         o.style.display = "none";
     }
 }

 function page_popup(url) {
    
    window.open(url, "brendonweb_popup", "scrollbars=1,width=600");

}


function onkey_numonly(e) {
    var keynum;
    var keychar;
    var numcheck;

    if (window.event) // IE
    {
        keynum = e.keyCode;
    }
    else if (e.which) // Netscape/Firefox/Opera
    {
        keynum = e.which;
    }

    if (keynum == undefined || keynum == null) {
        if (e != null) {
            keynum = e.keyCode;
        }
    }

    if ((keynum <= 47 || keynum >= 58)
        && !(keynum == 37 || keynum == 39 || keynum == 46 || keynum == 8)) {
        return false;
    }
    else {
        return true;
    }
}


function pageWidth()
{ return window.innerWidth != null ? window.innerWidth : document.documentElement && document.documentElement.clientWidth ? document.documentElement.clientWidth : document.body != null ? document.body.clientWidth : null; }
function pageHeight() 
{ return window.innerHeight != null ? window.innerHeight : document.documentElement && document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body != null ? document.body.clientHeight : null; }