//Soundex in Javascript

function doSoundex() 
{
  var su = surname.toLowerCase();
  var l = su.length;
  var x1;
  var tn = "";
  var out = "";
  var ct = 0;
 
 for( i=0; i<l; i++ ) 
  {
    var n = "0";
    var c1 = su.charAt(i);
    if( (c1=="a")||(c1=="e")||(c1=="i")||(c1=="o")||(c1=="u")||(c1=="y") ) 
    { 
    n="-1"; 
    }
    else if( (c1=="h")||(c1=="w") ) 
    { 
    n="-2"; 
    }
    else if( (c1=="b")||(c1=="p")||(c1=="f")||(c1=="v") ) 
    { 
    n="1"; 
    }
    else if( (c1=="c")||(c1=="s")||(c1=="k")||(c1=="g")||(c1=="j")||(c1=="q")||(c1=="x")||(c1=="z") ) 
    { 
    n="2"; 
    }
    else if( (c1=="d")||(c1=="t") ) 
    { 
    n="3"; 
    }
    else if( (c1=="l") ) 
    { 
    n="4"; 
    }
    else if( (c1=="m")||(c1=="n") ) 
    { 
    n="5"; 
    }
    else if( (c1=="r") ) 
    { 
    n="6"; 
    }
    if( n==tn ) 
    { 
    tn=n; continue; 
    }
    if( (ct==0) && (n!=0) ) 
    { 
    x1 = c1.toUpperCase(); ct++; tn=n; 
    }
    else if( n>0 ) 
    { ct++; out=out+n; tn=n; 
    }
    else if( n==-1 ) 
    { 
    tn=n; 
    }
    if( ct==4 ) 
    { 
    break; 
    }
  }
  
function getkeycode(e) 
{
  var keycode;
  if (e) keycode = e.which;
  if (keycode == 13) { doSoundex(); 
  }
}