I have created an application for showing an Information Window popup for markers, The application is working fine and the popup is showing correctly but the only solution i
It appears that the title of your marker is set to the html content of your pop up window. When you create the marker object, give it a title attribute of what you would like to be displayed (i.e. name of your location...)
var marker = new google.maps.Marker({
position: whateverpositionyouset,
title: whatevertitleyouwant,
map: map
})