function calc_SB(form) {
   z_SB=eval(form.z_SB.value);
   y_SB=eval(form.y_SB.value);
   x_SB=eval(form.x_SB.value);
   c_SB=(z_SB/36)*(y_SB/3)*(x_SB/3);
   d_SB=parseInt(c_SB*100);
   e_SB=d_SB/100;
   form.ans_SB.value = e_SB;
}
function calc_WL(form) {
   z_WL=eval(form.z_WL.value);
   y_WL=eval(form.y_WL.value);
   x_WL=eval(form.x_WL.value);
   c_WL=(z_WL/36)*(y_WL/3)*(x_WL/3);
   d_WL=parseInt(c_WL*100);
   e_WL=d_WL/100;
   form.ans_WL.value = e_WL;
}
function calc_FT(form) {
   z_FT=eval(form.z_FT.value);
   y_FT=eval(form.y_FT.value);
   x_FT=eval(form.x_FT.value);
   c_FT=(z_FT/36)*(y_FT/3)*(x_FT/36);
   d_FT=parseInt(c_FT*100);
   e_FT=d_FT/100;
   form.ans_FT.value = e_FT;
}
function calc_PS(form) {
   z_PS=eval(form.z_PS.value);
   y_PS=eval(form.y_PS.value);
   x_PS=eval(form.x_PS.value);
   c_PS=(z_PS/36)*(y_PS/3)*(x_PS/36);
   d_PS=parseInt(c_PS*100);
   e_PS=d_PS/100;
   form.ans_PS.value = e_PS;
}
function calc_PR(form) {
   z_PR=eval(form.z_PR.value);
   y_PR=eval(form.y_PR.value);
   x_PR=eval(form.x_PS.value);
   c_PR=((z_PR/72)*(z_PR/72)*3.1416)*(y_PR/3);
   d_PR=parseInt(c_PR*100);
   e_PR=d_PR/100;
   form.ans_PR.value = e_PR;
}
function calc_AG(form) {
     calc_SB(form);
	 calc_WL(form);
	 calc_FT(form);
	 calc_PS(form);
	 calc_PR(form);
	 a=eval(form.ans_SB.value);
	 b=eval(form.ans_WL.value);
	 c=eval(form.ans_FT.value);
	 d=eval(form.ans_PS.value);
	 e=eval(form.ans_PR.value);
	 f=(a+b+c+d+e)*100;
	 g=parseInt(f);
	 h=g/100;
	 form.ans_AG.value=h;
}

function MM_callJS(jsStr) { //v2.0
  return eval(jsStr)
}