// JavaScript Document


var eind=new Array();
var tourism=new Array();
var a=0;
var b=0;
function DoCalc() {
eind=document.getElementById("abc").value.split("/");
tourism=document.getElementById("pqr").value.split("/");
//alert (eind);
//alert (tourism);
d=Math.acos(Math.sin(eind[2])
*Math.sin(tourism[2])
+Math.cos(eind[2])
*Math.cos(tourism[2])
*Math.cos(eind[4]-tourism[4]));
a=Math.round(3956.073*d);
if (Math.sin(tourism[4]-eind[4]) < 0) {
b=Math.acos((Math.sin(tourism[2])
-Math.sin(eind[2])*Math.cos(d))
/(Math.sin(d)*Math.cos(eind[2])));
} 
else { 
b=2*Math.PI
-Math.acos((Math.sin(tourism[2])
-Math.sin(eind[2])
*Math.cos(d))/(Math.sin(d)
*Math.cos(eind[2])));
}
b=b*(180/Math.PI);
	
alert("Distance measured is:" +" " + Math.round(a*1.6094) +" "+ "kms.");
   }

// End -->