function launchModal(id) {
  //Set the mask height and width
  var maskHeight = 400;
  var maskWidth = 435;
      
  //Set the mask heigh and width
  $('#mask').css({'width':maskWidth,'height':maskHeight});
      
  //transition effect		
  $('#mask').fadeIn(1000);	
  $('#mask').fadeTo("slow",0.8);	
  
  //var winH = $(window).height();
  var winW = $(window).width();
  
  //$(id).css('top',  winH/2-$(id).height()/2);
  $(id).css('left', winW/2-$(id).width()/2-20);
  $('#mask').css('left', winW/2-$('#mask').width()/2)
  
  //Set the popup coordinates
  $('#mask').css('top',  350);
  //$('#mask').css('left', 390);
  $(id).css('top', 360);
  //$(id).css('left', 400);
      
  //transition effect
  $(id).fadeIn(0); 
}