var tileSources =  [ //grepmeaway
"osd_58_3.dzi",
"osd_57_3.dzi",
"osd_56_3.dzi",
"osd_55_3.dzi",
"osd_54_3.dzi",
"osd_53_3.dzi",
"osd_52_3.dzi",
"osd_51_3.dzi",
"osd_50_3.dzi",
"osd_49_3.dzi",
"osd_48_3.dzi",
"osd_47_3.dzi",
"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_40_3.dzi",
"osd_39_3.dzi",
"osd_38_3.dzi",
"osd_36_3.dzi",
"osd_35_3.dzi",
"osd_34_3.dzi",
"osd_33_3.dzi",
"osd_32_3.dzi",
"osd_31_3.dzi",
"osd_30_3.dzi",
"osd_29_3.dzi",
"osd_28_3.dzi",
"osd_27_3.dzi",
"osd_25_3.dzi",
"osd_24_3.dzi",
"osd_23_3.dzi",
"osd_22_3.dzi",
"osd_21_3.dzi",
"osd_20_3.dzi",
"osd_19_3.dzi",
"osd_18_3.dzi",
"osd_17_3.dzi",
"osd_1_3.dzi",
"osd_0_3.dzi",
]; //grepmeaway