function LatLng(c,d){this.lat=c;this.lng=d;this.distance=LatLngDistance;this.toOSRef=LatLngToOSRef;this.toUTMRef=LatLngToUTMRef;this.WGS84ToOSGB36=WGS84ToOSGB36;this.OSGB36ToWGS84=OSGB36ToWGS84;this.toString=LatLngToString}function LatLngToString(){return"("+this.lat+", "+this.lng+")"}function OSRef(c,d){this.easting=c;this.northing=d;this.toLatLng=OSRefToLatLng;this.toString=OSRefToString;this.toSixFigureString=OSRefToSixFigureString}function OSRefToString(){return"("+this.easting+", "+this.northing+")"}function OSRefToSixFigureString(){var r=Math.floor(this.easting/100000);var e=Math.floor(this.northing/100000);var q="";if(e<5){if(r<5){q="S"}else{q="T"}}else{if(e<10){if(r<5){q="N"}else{q="O"}}else{q="H"}}var l="";var p=65+((4-(e%5))*5)+(r%5);var t=p;if(p>=73){p++}l=chr(p);var o=Math.floor((this.easting-(100000*r))/100);var s=Math.floor((this.northing-(100000*e))/100);var m=o;if(o<100){m="0"+m}if(o<10){m="0"+m}var n=s;if(s<100){n="0"+n}if(s<10){n="0"+n}return q+l+m+n}function UTMRef(g,h,e,f){this.easting=g;this.northing=h;this.latZone=e;this.lngZone=f;this.toLatLng=UTMRefToLatLng;this.toString=UTMRefToString}function UTMRefToString(){return this.lngZone+this.latZone+" "+this.easting+" "+this.northing}function RefEll(d,c){this.maj=d;this.min=c;this.ecc=((d*d)-(c*c))/(d*d)}function sinSquared(b){return Math.sin(b)*Math.sin(b)}function cosSquared(b){return Math.cos(b)*Math.cos(b)}function tanSquared(b){return Math.tan(b)*Math.tan(b)}function sec(b){return 1/Math.cos(b)}function deg2rad(b){return b*(Math.PI/180)}function rad2deg(b){return b*(180/Math.PI)}function chr(d){var c=d.toString(16);if(c.length==1){c="0"+c}c="%"+c;return unescape(c)}function ord(f){var g=f.charAt(0);var c;for(c=0;c<256;++c){var h=c.toString(16);if(h.length==1){h="0"+h}h="%"+h;h=unescape(h);if(h==g){break}}return c}function LatLngDistance(o){var d=6366.707;var w=deg2rad(this.lat);var t=deg2rad(o.lat);var r=deg2rad(this.lng);var x=deg2rad(o.lng);var y=d*Math.cos(r)*Math.sin(w);var p=d*Math.sin(r)*Math.sin(w);var u=d*Math.cos(w);var z=d*Math.cos(x)*Math.sin(t);var q=d*Math.sin(x)*Math.sin(t);var v=d*Math.cos(t);var s=Math.sqrt((y-z)*(y-z)+(p-q)*(p-q)+(u-v)*(u-v));return s}function OSGB36ToWGS84(){var O=new RefEll(6377563.396,6356256.909);var b=O.maj;var s=O.min;var S=O.ecc;var aa=deg2rad(this.lat);var x=deg2rad(this.lng);var z=b/(Math.sqrt(1-S*sinSquared(aa)));var M=0;var Q=(z+M)*Math.cos(aa)*Math.cos(x);var T=(z+M)*Math.cos(aa)*Math.sin(x);var U=((1-S)*z+M)*Math.sin(aa);var a=446.448;var i=-124.157;var v=542.06;var P=-0.0000204894;var X=deg2rad(0.00004172222);var Y=deg2rad(0.00006861111);var Z=deg2rad(0.00023391666);var R=a+(Q*(1+P))+(-X*T)+(Y*U);var y=i+(Z*Q)+(T*(1+P))+(-X*U);var ab=v+(-Y*Q)+(X*T)+(U*(1+P));var V=new RefEll(6378137,6356752.3141);b=V.maj;s=V.min;S=V.ecc;var L=rad2deg(Math.atan(y/R));var N=Math.sqrt((R*R)+(y*y));var W=Math.atan(ab/(N*(1-S)));for(var H=1;H<10;H++){z=b/(Math.sqrt(1-S*sinSquared(W)));phiN1=Math.atan((ab+(S*z*Math.sin(W)))/N);W=phiN1}var p=rad2deg(W);this.lat=p;this.lng=L}function WGS84ToOSGB36(){var V=new RefEll(6378137,6356752.3141);var b=V.maj;var s=V.min;var S=V.ecc;var aa=deg2rad(this.lat);var x=deg2rad(this.lng);var z=b/(Math.sqrt(1-S*sinSquared(aa)));var M=0;var O=(z+M)*Math.cos(aa)*Math.cos(x);var T=(z+M)*Math.cos(aa)*Math.sin(x);var U=((1-S)*z+M)*Math.sin(aa);var a=-446.448;var i=124.157;var v=-542.06;var P=0.0000204894;var X=deg2rad(-0.00004172222);var Y=deg2rad(-0.00006861111);var Z=deg2rad(-0.00023391666);var Q=a+(O*(1+P))+(-X*T)+(Y*U);var y=i+(Z*O)+(T*(1+P))+(-X*U);var ab=v+(-Y*O)+(X*T)+(U*(1+P));var R=new RefEll(6377563.396,6356256.909);b=R.maj;s=R.min;S=R.ecc;var L=rad2deg(Math.atan(y/Q));var N=Math.sqrt((Q*Q)+(y*y));var W=Math.atan(ab/(N*(1-S)));for(var H=1;H<10;H++){z=b/(Math.sqrt(1-S*sinSquared(W)));phiN1=Math.atan((ab+(S*z*Math.sin(W)))/N);W=phiN1}var p=rad2deg(W);this.lat=p;this.lng=L}function OSRefToLatLng(){var R=new RefEll(6377563.396,6356256.909);var H=0.9996012717;var F=-100000;var P=400000;var a=deg2rad(49);var Z=deg2rad(-2);var b=R.maj;var n=R.min;var S=R.ecc;var W=0;var L=0;var G=this.easting;var V=this.northing;var E=(b-n)/(b+n);var U=0;var Q=((V-F)/(b*H))+a;do{U=(n*H)*(((1+E+((5/4)*E*E)+((5/4)*E*E*E))*(Q-a))-(((3*E)+(3*E*E)+((21/8)*E*E*E))*Math.sin(Q-a)*Math.cos(Q+a))+((((15/8)*E*E)+((15/8)*E*E*E))*Math.sin(2*(Q-a))*Math.cos(2*(Q+a)))-(((35/24)*E*E*E)*Math.sin(3*(Q-a))*Math.cos(3*(Q+a))));Q+=(V-F-U)/(b*H)}while((V-F-U)>=0.001);var N=b*H*Math.pow(1-S*sinSquared(Q),-0.5);var Y=b*H*(1-S)*Math.pow(1-S*sinSquared(Q),-1.5);var J=(N/Y)-1;var v=Math.tan(Q)/(2*Y*N);var O=(Math.tan(Q)/(24*Y*Math.pow(N,3)))*(5+(3*tanSquared(Q))+J-(9*tanSquared(Q)*J));var I=(Math.tan(Q)/(720*Y*Math.pow(N,5)))*(61+(90*tanSquared(Q))+(45*tanSquared(Q)*tanSquared(Q)));var X=sec(Q)/N;var T=(sec(Q)/(6*N*N*N))*((N/Y)+(2*tanSquared(Q)));var K=(sec(Q)/(120*Math.pow(N,5)))*(5+(28*tanSquared(Q))+(24*tanSquared(Q)*tanSquared(Q)));var M=(sec(Q)/(5040*Math.pow(N,7)))*(61+(662*tanSquared(Q))+(1320*tanSquared(Q)*tanSquared(Q))+(720*tanSquared(Q)*tanSquared(Q)*tanSquared(Q)));W=Q-(v*Math.pow(G-P,2))+(O*Math.pow(G-P,4))-(I*Math.pow(G-P,6));L=Z+(X*(G-P))-(T*Math.pow(G-P,3))+(K*Math.pow(G-P,5))-(M*Math.pow(G-P,7));return new LatLng(rad2deg(W),rad2deg(L))}function LatLngToOSRef(){var N=new RefEll(6377563.396,6356256.909);var G=0.9996012717;var F=-100000;var M=400000;var I=deg2rad(49);var W=deg2rad(-2);var K=N.maj;var a=N.min;var P=N.ecc;var U=deg2rad(this.lat);var J=deg2rad(this.lng);var H=0;var R=0;var D=(K-a)/(K+a);var L=K*G*Math.pow(1-P*sinSquared(U),-0.5);var V=K*G*(1-P)*Math.pow(1-P*sinSquared(U),-1.5);var E=(L/V)-1;var Q=(a*G)*(((1+D+((5/4)*D*D)+((5/4)*D*D*D))*(U-I))-(((3*D)+(3*D*D)+((21/8)*D*D*D))*Math.sin(U-I)*Math.cos(U+I))+((((15/8)*D*D)+((15/8)*D*D*D))*Math.sin(2*(U-I))*Math.cos(2*(U+I)))-(((35/24)*D*D*D)*Math.sin(3*(U-I))*Math.cos(3*(U+I))));var O=Q+F;var S=(L/2)*Math.sin(U)*Math.cos(U);var v=(L/24)*Math.sin(U)*Math.pow(Math.cos(U),3)*(5-tanSquared(U)+(9*E));var b=(L/720)*Math.sin(U)*Math.pow(Math.cos(U),5)*(61-(58*tanSquared(U))+Math.pow(Math.tan(U),4));var X=L*Math.cos(U);var T=(L/6)*Math.pow(Math.cos(U),3)*((L/V)-tanSquared(U));var n=(L/120)*Math.pow(Math.cos(U),5)*(5-(18*tanSquared(U))+(Math.pow(Math.tan(U),4))+(14*E)-(58*tanSquared(U)*E));R=O+(S*Math.pow(J-W,2))+(v*Math.pow(J-W,4))+(b*Math.pow(J-W,6));H=M+(X*(J-W))+(T*Math.pow(J-W,3))+(n*Math.pow(J-W,5));return new OSRef(H,R)}function UTMRefToLatLng(){var L=new RefEll(6378137,6356752.314);var r=0.9996;var t=L.maj;var J=L.ecc;var y=J/(1-J);var M=(1-Math.sqrt(1-J))/(1+Math.sqrt(1-J));var I=this.easting-500000;var K=this.northing;var N=this.lngZone;var O=this.latZone;var P=(N-1)*6-180+3;if((ord(O)-ord("N"))<0){K-=10000000}var d=K/r;var n=d/(t*(1-J/4-3*J*J/64-5*Math.pow(J,3)/256));var c=n+(3*M/2-27*Math.pow(M,3)/32)*Math.sin(2*n)+(21*M*M/16-55*Math.pow(M,4)/32)*Math.sin(4*n)+(151*Math.pow(M,3)/96)*Math.sin(6*n);var m=t/Math.sqrt(1-J*Math.sin(c)*Math.sin(c));var G=Math.tan(c)*Math.tan(c);var F=y*Math.cos(c)*Math.cos(c);var E=t*(1-J)/Math.pow(1-J*Math.sin(c)*Math.sin(c),1.5);var a=I/(m*r);var x=(c-(m*Math.tan(c)/E)*(a*a/2-(5+(3*G)+(10*F)-(4*F*F)-(9*y))*Math.pow(a,4)/24+(61+(90*G)+(298*F)+(45*G*G)-(252*y)-(3*F*F))*Math.pow(a,6)/720))*(180/Math.PI);var H=P+((a-(1+2*G+F)*Math.pow(a,3)/6+(5-(2*F)+(28*G)-(3*F*F)+(8*y)+(24*G*G))*Math.pow(a,5)/120)/Math.cos(c))*(180/Math.PI);return new LatLng(x,H)}function LatLngToUTMRef(){var H=new RefEll(6378137,6356752.314);var c=0.9996;var n=H.maj;var F=H.ecc;var D=this.lng;var C=this.lat;var K=C*(Math.PI/180);var z=D*(Math.PI/180);var a=Math.floor((D+180)/6)+1;if(C>=56&&C<64&&D>=3&&D<12){a=32}if(C>=72&&C<84){if(D>=0&&D<9){a=31}else{if(D>=9&&D<21){a=33}else{if(D>=21&&D<33){a=35}else{if(D>=33&&D<42){a=37}}}}}var L=(a-1)*6-180+3;var y=L*(Math.PI/180);var x=getUTMLatitudeZoneLetter(C);ePrimeSquared=(F)/(1-F);var A=n/Math.sqrt(1-F*Math.sin(K)*Math.sin(K));var E=Math.tan(K)*Math.tan(K);var t=ePrimeSquared*Math.cos(K)*Math.cos(K);var B=Math.cos(K)*(z-y);var G=n*((1-F/4-3*F*F/64-5*F*F*F/256)*K-(3*F/8+3*F*F/32+45*F*F*F/1024)*Math.sin(2*K)+(15*F*F/256+45*F*F*F/1024)*Math.sin(4*K)-(35*F*F*F/3072)*Math.sin(6*K));var I=(c*A*(B+(1-E+t)*Math.pow(B,3)/6+(5-18*E+E*E+72*t-58*ePrimeSquared)*Math.pow(B,5)/120)+500000);var J=(c*(G+A*Math.tan(K)*(B*B/2+(5-E+(9*t)+(4*t*t))*Math.pow(B,4)/24+(61-(58*E)+(E*E)+(600*t)-(330*ePrimeSquared))*Math.pow(B,6)/720)));if(C<0){J+=10000000}return new UTMRef(I,J,x,a)}function getOSRefFromSixFigureReference(m){var n=m.substring(0,1);var o=m.substring(1,2);var p=parseInt(m.substring(2,5),10)*100;var l=parseInt(m.substring(5,8),10)*100;if(n=="H"){l+=1000000}else{if(n=="N"){l+=500000}else{if(n=="O"){l+=500000;p+=500000}else{if(n=="T"){p+=500000}}}}var i=ord(o);if(i>73){i--}var j=((i-65)%5)*100000;var k=(4-Math.floor((i-65)/5))*100000;return new OSRef(p+j,l+k)}function getUTMLatitudeZoneLetter(b){if((84>=b)&&(b>=72)){return"X"}else{if((72>b)&&(b>=64)){return"W"}else{if((64>b)&&(b>=56)){return"V"}else{if((56>b)&&(b>=48)){return"U"}else{if((48>b)&&(b>=40)){return"T"}else{if((40>b)&&(b>=32)){return"S"}else{if((32>b)&&(b>=24)){return"R"}else{if((24>b)&&(b>=16)){return"Q"}else{if((16>b)&&(b>=8)){return"P"}else{if((8>b)&&(b>=0)){return"N"}else{if((0>b)&&(b>=-8)){return"M"}else{if((-8>b)&&(b>=-16)){return"L"}else{if((-16>b)&&(b>=-24)){return"K"}else{if((-24>b)&&(b>=-32)){return"J"}else{if((-32>b)&&(b>=-40)){return"H"}else{if((-40>b)&&(b>=-48)){return"G"}else{if((-48>b)&&(b>=-56)){return"F"}else{if((-56>b)&&(b>=-64)){return"E"}else{if((-64>b)&&(b>=-72)){return"D"}else{if((-72>b)&&(b>=-80)){return"C"}else{return"Z"}}}}}}}}}}}}}}}}}}}}};