var tileSources =  [ //grepmeaway
"osd_46_3.dzi",
"osd_45_3.dzi",
"osd_44_3.dzi",
"osd_43_3.dzi",
"osd_42_3.dzi",
"osd_41_3.dzi",
"osd_39_3.dzi",
"osd_38_3.dzi",
"osd_37_3.dzi",
"osd_36_3.dzi",
"osd_35_3.dzi",
"osd_34_3.dzi",
"osd_33_3.dzi",
"osd_32_3.dzi",
]; //grepmeaway