function gradient(id, level)
{
	var box = document.getElementById(id);
	box.style.opacity = level;
	box.style.MozOpacity = level;
	box.style.KhtmlOpacity = level;
	box.style.filter = "alpha(opacity=" + 100 + ")";
	box.style.display="block";
	return;
}


function fadein(id) 
{
	var level = 0;
	while(level <= 1)
	{
		setTimeout( "gradient('" + id + "'," + level + ")", (level* 1000) + 10);
		level += 0.01;
	}
}


// Open the lightbox

function openFreeAccessPopBox(formtitle, fadin,videoLink)
{
 /* var box = document.getElementById('box_freeacess'); 
  document.getElementById('filter_freeacess').style.display='block';
    var btitle = document.getElementById('boxtitle_freeacess');
  btitle.innerHTML = "Free Trial (no credit card required)";
  
  if(fadin)
  {
	 gradient("box_freeacess", 0);
	 fadein("box_freeacess");
  }
  else
  { 	
    box.style.display='block';
  }*/
  openWindow(videoLink);
}	



function closeFreeAccessPopBox()
{
   document.getElementById('box_freeacess').style.display='none';
   document.getElementById('filter_freeacess').style.display='none';
}




function openFullAceessPopupBox(formtitle,memberSignupLink2, fadin)
{
  var box = document.getElementById('box_fullaccess'); 
  document.getElementById('filter_fullaccess').style.display='block';
 // document.getElementById('memberLink').href=memberSignupLink2;
  var btitle = document.getElementById('boxtitle_fullaccess');
  btitle.innerHTML = "Get Full Access!";
  
  if(fadin)
  {
	 gradient("box_fullaccess", 0);
	 fadein("box_fullaccess");
  }
  else
  { 	
    box.style.display='block';
  }  	
}	



function closeFullAceessPopupBox()
{
   document.getElementById('box_fullaccess').style.display='none';
   document.getElementById('filter_fullaccess').style.display='none';
}

/* feedback form */

function openFeedbackPopupBox(subject,fadin)
{
  var box = document.getElementById('box_feedback'); 
  document.getElementById('filter_feedback').style.display='block';
  
  var btitle = document.getElementById('boxtitle_feedback');
  btitle.innerHTML = "Send us your feedback";
  //document.getElementById('subject_feedback').innerHTML=subject;
  document.form_feedback.subject_feedback.value=subject;
  
  if(fadin)
  {
	 gradient("box_feedback", 0);
	 fadein("box_feedback");
  }
  else
  { 	
    box.style.display='block';
  }  	
}	



function closeFeedbackPopupBox()
{
   document.getElementById('box_feedback').style.display='none';
   document.getElementById('filter_feedback').style.display='none';
}



/*popup after you signup for free access*/
function closeAfterFreeAccessPopupBox()
{
   document.getElementById('box_afterFreeAccess').style.display='none';
   document.getElementById('filter_afterFreeAccess').style.display='none';
}

/**signgle course selction pop-up *****/
function openSingleCourseSelectionPopupBox(formtitle,fadin)
{
  var box = document.getElementById('box_singlecourse_selection'); 
  document.getElementById('filter_singlecourse_selection').style.display='block';
  var btitle = document.getElementById('boxtitle_singlecourse_selection');
  btitle.innerHTML = formtitle;
  
  if(fadin)
  {
	 gradient("box_singlecourse_selection", 0);
	 fadein("box_singlecourse_selection");
  }
  else
  { 	
    box.style.display='block';
  }  	
}	



function closeSingleCourseSelectionPopupBox()
{
   document.getElementById('box_singlecourse_selection').style.display='none';
   document.getElementById('filter_singlecourse_selection').style.display='none';
}