function Trim(sString) {
	if (sString != '' && sString != null)
	{
		sString = sString.replace(/^\s*/, "");		 // LTrim
		sString = sString.replace(/\s*$/, "");		 // RTrim
	}
    return(sString);
}

function isInt (s) {
	var c,i;
	var l=s.length;
	
	/* eval each char in arg; return false if not a number */
	for (i=0; i<l; i++) {
      c = s.charAt(i)
	  if (isNaN(c))
	   {
	      return false
	   }
	}
	return true;
}