/*****************************
*** Powered  By  Mahongtao ***
*** Last Modify 2007-02-27 ***
*****************************/

function isDoubleFont(s)
{
	if(s.search(/[^\x00-\xff]/)!=-1)
		return true;
	else
		return false;
}

function isEmail(s)
{
	if (s.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
		return true;
	else
		return false;
}

function isInt(s)
{
	if(s.search(/^[0-9]+$/)!=-1)
		return true;
	else
		return false;
}
function isDecimal(s)
{
	return !isNaN(s);
}