vbzyrl7n=xppr('zyrl7_0.gif');vbzyrl7o=xppr('zyrl7_1.gif');vbzyrl7c=xppr('zyrl7_2.gif');vbuyrl7n=xppr('uyrl7_0.gif');vbuyrl7o=xppr('uyrl7_1.gif');vbuyrl7c=xppr('uyrl7_2.gif');vbvyrl7n=xppr('vyrl7_0.gif');vbvyrl7o=xppr('vyrl7_1.gif');vbvyrl7c=xppr('vyrl7_2.gif');vbyyrl7n=xppr('yyrl7_0.gif');vbyyrl7o=xppr('yyrl7_1.gif');vbyyrl7c=xppr('yyrl7_2.gif');vbxyrl7n=xppr('xyrl7_0.gif');vbxyrl7o=xppr('xyrl7_1.gif');vbxyrl7c=xppr('xyrl7_2.gif');vblyrl7n=xppr('lyrl7_0.gif');vblyrl7o=xppr('lyrl7_1.gif');vblyrl7c=xppr('lyrl7_2.gif');vbbyrl7n=xppr('byrl7_0.gif');vbbyrl7o=xppr('byrl7_1.gif');vbbyrl7c=xppr('byrl7_2.gif');vbfyrl7n=xppr('fyrl7_0.gif');vbfyrl7o=xppr('fyrl7_1.gif');vbfyrl7c=xppr('fyrl7_2.gif');vbnyrl7n=xppr('nyrl7_0.gif');vbnyrl7o=xppr('nyrl7_1.gif');vbnyrl7c=xppr('nyrl7_2.gif');vbhyrl7n=xppr('hyrl7_0.gif');vbhyrl7o=xppr('hyrl7_1.gif');vbhyrl7c=xppr('hyrl7_2.gif');vbjyrl7n=xppr('jyrl7_0.gif');vbjyrl7o=xppr('jyrl7_1.gif');vbjyrl7c=xppr('jyrl7_2.gif');vbkyrl7n=xppr('kyrl7_0.gif');vbkyrl7o=xppr('kyrl7_1.gif');vbkyrl7c=xppr('kyrl7_2.gif');var btIdPref='vb';function xppr(im){var i=new Image();i.src='nav-files/bt'+im;return i;};function xpe(id){x=id.substring(0,id.length-1);if(document[btIdPref+x])document[btIdPref+x].src=eval(btIdPref+id+'.src');return false;};