I got it
var pinIcon = new google.maps.MarkerImage(
"http://chart.apis.google.com/chart?chst=d_map_pin_letter&chld="+data.title+"|90EE90",
null, /* size is determined at runtime */
null, /* origin is 0,0 */
null, /* anchor is bottom center of the scaled image */
new google.maps.Size(20, 30)); /* Size given in CSS Length units */
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
icon:pinIcon,
title: data.title
});