function setOpacity( to , id) {
 document.getElementById("styled_popup-" + id).style.opacity = to / 10;
 document.getElementById("styled_popup-" + id).style.filter = 'alpha(opacity=' + to * 10 + ')';
}

function fadeInMyPopup(id) {
 for( var i = 0 ; i <= 100 ; i++ )
   setTimeout( 'setOpacity(' + (i / 2) + ','+id+')' , 8 * i );
}

function fadeOutMyPopup(id) {
 for( var i = 0 ; i <= 100 ; i++ ) {
   setTimeout( 'setOpacity(' + (10 - i / 10) + ','+id+')' , 8 * i );
 }

 setTimeout('closeMyPopup('+id+')', 0 );
}

function closeMyPopup(id) {
 document.getElementById("styled_popup-"+id).style.display = "none"
}

function fireMyPopup(id) {
 setOpacity( 0 , id);
 document.getElementById("styled_popup-"+id).style.display = "block";
 fadeInMyPopup(id);
};