function Trim(str) {
var resultStr = "";
resultStr = TrimLeft(str);
resultStr = TrimRight(resultStr);
return resultStr;
}

function TrimLeft(str) {
var resultStr = "";
var i = len = 0;
if (str+"" == "undefined" || str == null) 
return "";
str += "";

if (str.length == 0) 
resultStr = "";
else { 
len = str.length;
while ((i <= len) && (str.charAt(i) == " "))
i++;
resultStr = str.substring(i, len);
}
return resultStr;
}

function TrimRight(str) {
var resultStr = "";
var i = 0;
if (str+"" == "undefined" || str == null) 
return "";
str += "";
if (str.length == 0) 
resultStr = "";
else {
i = str.length - 1;
while ((i >= 0) && (str.charAt(i) == " "))
i--;
resultStr = str.substring(0, i + 1);
}

return resultStr; 
}