popup automatically close on the next page.

Hi all,

I created this popup, but the popup stays open even when participants proceed to the next page.
How can I make automatically closed at the next page?
I need this popup to be closed on the next page, if participants don't close on this page.

This is my code:
Qualtrics.SurveyEngine.addOnload(function()
{


});

Qualtrics.SurveyEngine.addOnReady(function()
{ jQuery("[id*='dialog']" ).dialog({ autoOpen: false});
var delayTime = 3000; //This is the time of delay
setTimeout(function(){jQuery("[id*='dialog']" ).dialog({ autoOpen: true, draggable:true, scroll:false, height:'auto', width:'750x',
open: function(event,ui){
$(event.target).parent().css('position', 'fixed');
$(event.target).parent().css('top', '50px');
$(event.target).parent().css('left', '500px');
}
})}, delayTime);

});
Qualtrics.SurveyEngine.addOnUnload(function()
{

});