/*Talk-Bot by Wendell Cowart, Copyright(c) 2001-2013, This script 
may not be used in whole or in part in any form, shape or fashion. 
All rights reserved.*/

function calculate()
{
pos=calc_input.search(/[\+|\-|\^\*|\/|x|X]|by|from|and|plus|minus|divided|time|times|multiplied/);

len=calc_input.length;
first=calc_input.slice(0,pos);
second=calc_input.slice(pos,len);

fnum="";
snum="";

for (i=0;i<pos;i++)
{
char=first.charAt(i);
found=char.search(/[0-9]|\./);
if (found!=-1) fnum=fnum+first.charAt(i);
}
if (fnum=="") return true;

slen=second.length;
for (i=0;i<slen+1;i++)
{
char=second.charAt(i);
found=char.search(/[0-9]|\./);
if (found!=-1) snum=snum+second.charAt(i);
}
if (snum=="") return true;

fnum = fnum - 0;
snum = snum - 0;

if (calc_input.search(/plus/)!=-1) calc=fnum+snum;
else if ((calc_input.search("add")!=-1) && (calc_input.search(/by|and/)!=-1)) calc=fnum+snum;
else if ((calc_input.search("multiply")!=-1) && (calc_input.search(/by|and/)!=-1)) calc=fnum*snum;
else if ((calc_input.search("divide")!=-1) && (calc_input.search("by")!=-1)) calc=fnum/snum;
else if ((calc_input.search("subtract")!=-1) && (calc_input.search("from")!=-1)) calc=fnum-snum;
else if (calc_input.search(/minus/)!=-1) calc=fnum-snum;
else if (calc_input.search(/time|times|multiplied/)!=-1) calc=fnum*snum;
else if (calc_input.search(/divide|divided/)!=-1) calc=fnum/snum;
else if (calc_input.search(/\+/)!=-1) calc=fnum+snum;
else if (calc_input.search(/\-/)!=-1) calc=fnum-snum;
else if (calc_input.search(/\//)!=-1) calc=fnum/snum;
else if (calc_input.search(/\*|^|x|X/)!=-1) calc=fnum*snum;

calc_flag=1;
message[0] = "I believe the answer is "+calc+"."; 
message[1] = "Ok, I will take a shot and say "+calc+".";  
message[2] = "Mmmmm...."+calc+".";  
message[3] = "I calculate the answer to be "+calc+"."; 
num = [Math.floor(Math.random()*4)]
{document.result.result.value = message[num]; 
icon.src=icon99.src;
smiley.src=smiley12.src;
return true;}

}