function Trim(a){
    return(LTrim(RTrim(a)));
}

 

function LTrim(a){
    var i;
    i = 0;
    while (a.substring(i,i+1) == ' ')  i = i + 1;

    return a.substring(i);
}


function RTrim(a){
    var b;
    var i = a.length - 1;
    while (i >= 0 && a.substring(i,i+1) == ' ') i = i - 1;
    return a.substring(0,i+1);
}