// JScript source code

function checkEmail(email)
{
	var splitted = email.match("^(.+)@(.+)$");
	if(splitted == null) return false;
	if(splitted[1] != null )
	{
		var regexp_user=/^\"?[\w-_\.]*\"?$/;
		if(splitted[1].match(regexp_user) == null)
		return false;
	}
	
	if(splitted[2] != null)
	{
		var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
		if(splitted[2].match(regexp_domain) == null) 
		{
			var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
			if(splitted[2].match(regexp_ip) == null)
			return false;
		}
		return true;
	}
	return false;
}

function trim(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); // Again, there are two spaces in each of the strings
	}
	return retValue;
}
function isValidURL( url ) 
{
return url.search(/^(http|https|ftp)\:\/\/([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)?((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.[a-zA-Z]{2,4})(\:[0-9]+)?(\/[^\/][a-zA-Z0-9\.\,\?\'\\\/\+&%\$#\=~_\-]*)*$/) == 0;
}
function isValidDate(day,month,year)
{
	// since jan equals one and not zero, hence thirteen elements in the array.  
	var no_of_days_in_month = new Array(0,31,28,31,30,31,30,31,31,30,31,30,31)
	
	if (month >= 1 && month <= 12 && day >=  1 && day <= 31 && year >= 0)
	{ 
	
		//Handling february, special case. 
		if (month == 2)
		{
			if ( (year%4==0 && year%100 != 0) || year%400 == 0 )
				no_of_days_in_month[month]=29
		}

		if (day >= 1 && day <= no_of_days_in_month[month])
		{
			return true;
		} 
		else
		{
			return false;
		}

	}
	else
	{
		return false;
	}
}
function isDigit (c)
{
		 return ((c >= "0") && (c <= "9"))
}

function isInteger(iNumber)
{
	var i;
	
	for (i=0;i<iNumber.length;i++)
	{
		var c = iNumber.charAt(i);
	
		if (!isDigit(c))
		{
			return false;
		}
	}
	
  	return true;
}