function CheckDecimal(sText)
{
 	var ValidChars = "0123456789.";
	var IsNumber=true;
	var Char;

	for (i = 0; i < sText.length && IsNumber == true; i++) 
	{ 
		Char = sText.charAt(i); 
		if( ValidChars.indexOf(Char) == -1 ) 
			IsNumber = false;
	}

	return IsNumber;
}

function CheckEmail(v)
{
	var filter=/^.+@.+\..{2,4}$/;
	return filter.test(v);
}

function CheckInt(v)
{
	var filter=/^\d+$/;
	return filter.test(v);
}

function trim(str) {
    return ltrim(rtrim(str, " "), " ");
}

function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}