var tileSources =  [ //grepmeaway
"osd_34_3.dzi",
"osd_33_3.dzi",
"osd_31_3.dzi",
"osd_30_3.dzi",
"osd_29_3.dzi",
"osd_27_3.dzi",
"osd_26_3.dzi",
"osd_25_3.dzi",
"osd_23_3.dzi",
"osd_22_3.dzi",
"osd_20_3.dzi",
"osd_18_3.dzi",
"osd_7_3.dzi",
"osd_6_3.dzi",
"osd_5_3.dzi",
"osd_3_3.dzi",
"osd_2_3.dzi",
"osd_1_3.dzi",
"osd_0_3.dzi",
]; //grepmeaway