// JavaScript Document
function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
   {
   	var arVersion = navigator.appVersion.split("MSIE")
   	var version = parseFloat(arVersion[1])
   	if ((version >= 5.5) && (document.body.filters))
   {
   for(var i=0; i<document.images.length; i++)
  {
  var img = document.images[i]
  var imgName = img.src.toUpperCase()
  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
  {
 var imgID = (img.id) ? "id='" + img.id + "' " : ""
  var imgClass = (img.className) ? "class='" + img.className + "' " : ""
  var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
  var imgStyle = "display:inline-block;" + img.style.cssText
  if (img.align == "left") imgStyle = "float:left;" + imgStyle
  if (img.align == "right") imgStyle = "float:right;" + imgStyle
  if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
  var strNewHTML = "<span " + imgID + imgClass + imgTitle
  + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
 + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
  + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
  img.outerHTML = strNewHTML
  i = i-1
  }
  }
  }
  }
  window.attachEvent("onload", correctPNG);
  
  
  
  
  
  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('container');
  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('container');  // 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';
  }
}