/****************************************************************************************************************/
/*  This simple script convert-circle.js was written by Vadim Boikov and using at http://www.hella.ru/convert/  */
/*  Copyright (c) 2003 by Vadim Boikov (Moscow). Unauthorized duplication is no good and is prohibited.         */
/*  Do you have any questions?      Good Luck.                                      */
/****************************************************************************************************************/

		function ConvertA() {
  var A;
  A = document.MainForm.A.value;
  document.MainForm.A.value = A;
  document.MainForm.B.value = A*2;
  document.MainForm.C.value = A*2*Math.PI;
  document.MainForm.D.value = A*A*Math.PI;
}
		function ConvertB() {
  var B;
  B = document.MainForm.B.value;
  document.MainForm.B.value = B;
  document.MainForm.A.value = B*0.5;
  document.MainForm.C.value = B*Math.PI;
  document.MainForm.D.value = B*B*0.25*Math.PI;
}
		function ConvertC() {
  var C;
  var CA=Math.PI;
  var CB=Math.PI;
  var CD=Math.PI;
  C = document.MainForm.C.value;
  document.MainForm.C.value = C;
  document.MainForm.A.value = C*0.5/Math.PI;
  document.MainForm.B.value = C/Math.PI;
  document.MainForm.D.value = C*C*0.25/Math.PI;
}
		function ConvertD() {
  var D;
  D = document.MainForm.D.value;
  document.MainForm.D.value = D;
  document.MainForm.A.value = Math.sqrt(D/Math.PI);
  document.MainForm.B.value = Math.sqrt(4*D/Math.PI);
  document.MainForm.C.value = Math.sqrt(4*D*Math.PI);
}

function reset() {
  document.MainForm.A.value = "0";
}