// === Get/Hide/Show/Toggle ===

function ge()
{
  var ea;
  for( var i = 0; i < arguments.length; i++ ) {
    var e = arguments[i];
    if( typeof e == 'string' )
      e = document.getElementById(e);
    if( arguments.length == 1 )
      return e;
    if( !ea )
      ea = new Array();
    ea[ea.length] = e;
  }
  return ea;
}

function show()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.display = '';
  }
  return false;
}

function hide()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.display = 'none';
  }
  return false;
}

function shown(el) {
    el = ge(el);
    return (el.style.display != 'none');
}

function toggle()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    element.style.display = (element.style.display == 'block') ? 'none' : 'block';
  }
  return false;
}

function remove_node(node)
{
  if (node.removeNode)
    node.removeNode(true);
  else {
    for (var i=node.childNodes.length-1; i>=0; i--)
      remove_node(node.childNodes[i]);
      node.parentNode.removeChild(node);
    }
  return null;
}

// === Modifying Class Names ===//

// === Event Info Access ===

var KEYS = { BACKSPACE: 8,
             TAB:       9,
             RETURN:   13,
             ESC:      27,             
             LEFT:     37,
             UP:       38,             
             RIGHT:    39,             
             DOWN:     40,
             DELETE:   46 };

function mouseX(event)
{
  return event.pageX || (event.clientX +
    (document.documentElement.scrollLeft || document.body.scrollLeft));
}

function mouseY(event)
{
  return event.pageY || (event.clientY +
    (document.documentElement.scrollTop || document.body.scrollTop));
}

function pageScrollX()
{
  return document.body.scrollLeft || document.documentElement.scrollLeft;
}

function pageScrollY()
{
  return document.body.scrollTop || document.documentElement.scrollTop;
}

function elementX(obj)
{
  var curleft = 0;
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curleft += obj.offsetLeft;
      obj = obj.offsetParent;
    }
  }
  else if (obj.x)
    curleft += obj.x;
  return curleft;
}

function elementY(obj)
{
  var curtop = 0;
  if(obj.offsetParent) {
    while (obj.offsetParent) {
      curtop += obj.offsetTop;
      obj = obj.offsetParent;
    }
  }
  else if (obj.y)
    curtop += obj.y;
  return curtop;
}

// === Onload Registry ===

function onloadRegister(handler) {
  if (window.onload) {
    var old=window.onload;
    window.onload=function() { old(); handler(); };
  }
  else {
    window.onload=handler;
  }
}

// === Event Attaching ===
// (see: http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html)


// === Placeholder Text ===

function placeholderSetup(id) {
  var el = ge(id);
  if(!el) return;
  /*if(el.type != 'text') return;*/
  
  var ph = el.getAttribute("placeholder");
  if( ph && ph != "" ) {
    el.value = ph;
    el.style.color = '#777';
    el.is_focused = 0;
    addEventBase(el, 'focus', placeholderFocus);
    addEventBase(el, 'blur', placeholderBlur);
  }
}



// === Dropdown Menus ===

/* functionality for an optional drop down menu (example: drop downs in the 
nav.) It consists of a link, an arrow, and a menu which appears when the
arrow is clicked. Pass this function an arrow, link, and menu element 
 
arrow_class and arrow_old_class is optional
*/


/* special case for the app_switcher mneu, we need to set its position since it's right-aligned */
function position_app_switcher() {
  var switcher = ge('app_switcher');
  var menu = ge('app_switcher_menu');
  menu.style.top = (switcher.offsetHeight - 1) + 'px';
  menu.style.right = '0px';
}


// === String Utilities ===




// === URI Handling ===

function escapeURI(u)
{
    if(encodeURIComponent) {
        return encodeURIComponent(u);
    }
    if(escape) {
        return escape(u);
    }
}

function goURI(href) {
  window.location.href = href;
}

function is_email(email) {
  return /^[\w!.%+]+@[\w]+(?:\.[\w]+)+$/.test(email);
}

//13th parallel







function getRadioFormValue(obj) {
  for(i = 0; i < obj.length; i++) {
   if(obj[i].checked) {
     return obj[i].value;
   } 
  }  
  return null;
}

// === Deprecated ===
// --- Delete checkAgree when user profile picture editing moves to picture widget

function checkAgree() {
  if (document.frm.pic.value) {
    if (document.frm.agree.checked) {
      document.frm.submit();
    } else {
      show("error");
    }
  }
}

function isIE() {
 return (navigator.userAgent.toLowerCase().indexOf("msie") != -1);
}

function isSafari() {
 return (navigator.userAgent.indexOf("Safari") != -1);
}
    
function getTableRowShownDisplayProperty() {
  if (isIE()) {
    return  'inline';
  } else {
    return 'table-row';
  }
}
  
function showTableRow()
{ 
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.display =
        getTableRowShownDisplayProperty();
  }
  return false;
} 
  
function getParentRow(el) {
    el = ge(el);
    while (el.tagName && el.tagName != "TR") {
        el = el.parentNode;
    }
    return el;
}