function showpreview(vid,vidtitle){

	previewvid = document.getElementById('previewvideo');
	previewvid.style.display="block";
	previewvid.style.position="absolute";
	previewvid.style.width ="530px";
	previewvid.style.height="517px";//"473px";
	previewvid.style.top="0px";
	previewvid.style.left="0px";
	//previewvid.style.text-align="center";
	document.getElementById('previewswfholder').innerHTML="Preview Shown";
	grayOut(true);	
	document.getElementById('darkenScreenObject').onclick=hidepreview;
	createflash(vid,vidtitle);
	//document.getElementById('previewswfholder').innerHTML = "<img src='images/playerExit_black.jpg' onclick='hidepreview();'/>"+document.getElementById('previewswfholder').innerHTML;
	positionit('previewvideo', 2,2,0,0,517,530,0,0);
}
function hidepreview(){

	document.getElementById('previewvideo').style.display="none";
	document.getElementById('previewswfholder').innerHTML="";
	grayOut(false);
}

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 createflash(vid,vidtitle){
	if (AC_FL_RunContent == 0) {
		alert("This page requires AC_RunActiveContent.js.");
	} else {
		document.getElementById('previewswfholder').innerHTML=AC_FL_RunContent(
			'codebase', 'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0',
			'width', '530',
			'height', '473',
			'src', 'playerbase3preview',
			'quality', 'high',
			'pluginspage', 'http://www.macromedia.com/go/getflashplayer',
			'align', 'middle',
			'play', 'true',
			'loop', 'true',
			'scale', 'showall',
			'wmode', 'transparent',
			'devicefont', 'false',
			'id', 'playerbase3preview',
			'bgcolor', '#000000',
			'name', 'playerbase3preview',
			'menu', 'true',
			'allowFullScreen', 'true',
			'allowScriptAccess','sameDomain',
			'movie', 'playerbase3preview',
			'salign', '',
			'FlashVars','pvid='+vid	+'&title='+vidtitle		
			); //end AC code
	}

}