function trim(inputString) {

	if (typeof inputString != "string") { 
		return inputString; 
	}

	var retValue = inputString;
	var ch = retValue.substring(0, 1);

	while (ch == " ") {
		retValue = retValue.substring(1, retValue.length);
		ch = retValue.substring(0, 1);
	}

	ch = retValue.substring(retValue.length-1, retValue.length);

	while (ch == " ") {      
		retValue = retValue.substring(0, retValue.length-1);
      		ch = retValue.substring(retValue.length-1, retValue.length);
   	}

   	while (retValue.indexOf("  ") != -1) {
      		retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
   	}

   	return retValue;
}