/* +---------------------------------------------------------------+
// | jamroom_javascript.inc.js - Jamroom Misc Javascript functions |
// +---------------------------------------------------------------+
// | Copyright (c) 2003-2007 by Brian Johnson <bigguy@jamroom.net> |
// +---------------------------------------------------------------+
// $Id: jamroom_javascript.inc.js,v 3.4.2.4 2007-08-17 16:22:46 bigguy Exp $
*/

// If using Jamroom Cluster Server, document.domain must be set
// document.domain = 'yourdomain.com';

function popwin(mypage,myname,w,h,scroll)
{
  LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
  TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
  settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable';
  win = window.open(mypage,myname,settings)
  if (win.opener == null) {
    win.opener = self;
  }
}

function lockFormSubmit(lock)
{
  if (document.all || document.getElementById) {
    for ( i=0 ; i < lock.length ; i++ ) {
      if (lock.elements[i]) {
        var tempobj=lock.elements[i];
        if (tempobj.type.toLowerCase()=="submit" || tempobj.type.toLowerCase()=="reset" || tempobj.type.toLowerCase()=="button") {
          tempobj.disabled=true;
        }
      }
    }
  }
}

function move(index,to) {
    var list = document.form.list;
    var total = list.options.length-1;
    if (index == -1) {
        return false;
    }
    if (to == +1 && index == total) {
        return false;
    }
    if (to == -1 && index == 0) {
        return false;
    }
    var items = new Array;
    var values = new Array;
    for (i = total; i >= 0; i--) {
        items[i] = list.options[i].text;
        values[i] = list.options[i].value;
    }
    for (i = total; i >= 0; i--) {
        if (index == i) {
            list.options[i + to] = new Option(items[i],values[i + to], 0, 1);
            list.options[i] = new Option(items[i + to], values[i]);
            i--;
        }
        else {
            list.options[i] = new Option(items[i], values[i]);
        }
    }
    list.focus();
}

/**
 * The newCaptcha() function resets the captcha image to a new image
 */
function newCaptcha(width,height,url)
{
    var now = new Date();
    document.captcha.src = url+'/image.php?mode=captcha&width='+width+'&height='+height+'&u='+ now.getTime();
    return(false);
}

/**
 * The vaultpop() function is used in the flash players
 */
function vaultpop(URL)
{
    var day = new Date();
    var id  = day.getTime();
    eval("page"+ id +" = window.open(URL, '"+ id +"', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=650,height=600,left = 50,top = 50');");
}

function grayOut(vis,options)
{
  // Pass true to gray out screen, false to ungray
  // options are optional.  This is a JSON object with the following (optional) properties
  // opacity:0-100         // Lower number = less grayout higher = more of a blackout 
  // zindex: #             // HTML elements with a higher zindex appear on top of the gray out
  // bgcolor: (#xxxxxx)    // Standard RGB Hex color code
  // grayOut(true, {'zindex':'50', 'bgcolor':'#0000FF', 'opacity':'70'});
  // Because options is JSON opacity/zindex/bgcolor are all optional and can appear
  // in any order.  Pass only the properties you need to set.
  var options = options || {}; 
  var zindex = options.zindex || 50;
  var opacity = options.opacity || 70;
  var opaque = (opacity / 100);
  var bgcolor = options.bgcolor || '#000000';
  var dark=document.getElementById('darkenScreenObject');
  if (!dark) {
    // The dark layer doesn't exist, it's never been created.  So we'll
    // create it here and apply some basic styles.
    // If you are getting errors in IE see: http://support.microsoft.com/default.aspx/kb/927917
    var tbody = document.getElementsByTagName("body")[0];
    var tnode = document.createElement('div');           // Create the layer.
        tnode.style.position='absolute';                 // Position absolutely
        tnode.style.top='0px';                           // In the top
        tnode.style.left='0px';                          // Left corner of the page
        tnode.style.overflow='hidden';                   // Try to avoid making scroll bars            
        tnode.style.display='none';                      // Start out Hidden
        tnode.id='darkenScreenObject';                   // Name it so we can find it later
    tbody.appendChild(tnode);                            // Add it to the web page
    dark=document.getElementById('darkenScreenObject');  // Get the object.
  }
  if (vis) {
    // Calculate the page width and height 
    if( document.body && ( document.body.scrollWidth || document.body.scrollHeight ) ) {
        var pageWidth = document.body.scrollWidth+'px';
        var pageHeight = document.body.scrollHeight+'px';
    } else if( document.body.offsetWidth ) {
      var pageWidth = document.body.offsetWidth+'px';
      var pageHeight = document.body.offsetHeight+'px';
    } else {
       var pageWidth='100%';
       var pageHeight='100%';
    }   
    //set the shader to cover the entire page and make it visible.
    dark.style.opacity=opaque;                      
    dark.style.MozOpacity=opaque;                   
    dark.style.filter='alpha(opacity='+opacity+')'; 
    dark.style.zIndex=zindex;        
    dark.style.backgroundColor=bgcolor;  
    dark.style.width= pageWidth;
    dark.style.height= pageHeight;
    dark.style.display='block';                          
  } else {
     dark.style.display='none';
  }
}

// function jframe - used for simulating an iframe with AJAX page load
function jframe(j_div,j_url)
{
  if (window.XMLHttpRequest) {
    var xobj = new XMLHttpRequest();
  }
  else if (window.ActiveXObject) {
    var xobj = new ActiveXObject("Microsoft.XMLHTTP");
  }
  else {
    return(false);
  }
  xobj.open("GET",j_url,true);
  xobj.onreadystatechange=function(){
    if (xobj.readyState == 4) {
      document.getElementById(j_div).innerHTML=xobj.responseText;
    }
  }
  xobj.send(null);
}