function IsDate(DateString , Dilimeter, DateFormat) 
{ 
	if (DateString==null) return false; 
	if (Dilimeter=="" || Dilimeter==null) 
		Dilimeter = "-"; 
	if (DateFormat=="" || DateFormat==null)
		DateFormat = "m|d|y"
	var dfArray
	dfArray = DateFormat.split("|")
	var i
	var yearPos, monthPos, dayPos
	for (i=0; i<dfArray.length; i++)
	{
		if (dfArray[i].toLowerCase() == "y")
			yearPos = i;
		else if (dfArray[i].toLowerCase() == "m")
			monthPos = i;
		else if (dfArray[i].toLowerCase() == "d")
			dayPos = i;
	}
		
	var tempy = ""; 
	var tempm = ""; 
	var tempd = ""; 
	var tempArray; 
	if (DateString.length<8 && DateString.length>10) 
		return false;  
	tempArray = DateString.split(Dilimeter); 
	if (tempArray.length!=3) 
		return false; 
	/*
	if (tempArray[0].length==4) 
	{ 
		tempy = tempArray[0]; 
		tempd = tempArray[2]; 
	} 
	else 
	{ 
		//tempy = tempArray[2]; 
		//tempd = tempArray[1]; 
	} 
	tempm = tempArray[1]; 
	*/
	tempy = tempArray[yearPos]; 
	tempm = tempArray[monthPos]; 
	tempd = tempArray[dayPos]; 
	if (isNaN(tempd) || isNaN(tempy) || isNaN(tempm))
		return false;
	var tDateString = tempy + "/" + tempm + "/" + tempd + " 8:0:0";
	var tempDate = new Date(tDateString); 
	if (isNaN(tempDate)) 
		return false; 
	if (((tempDate.getUTCFullYear()).toString()==tempy*1) && (tempDate.getMonth()==(tempm*1)-1) && (tempDate.getDate()==tempd*1)
		) 
	{ 
		return true; 
	} 
	else 
		return false; 
}

function CheckDate(datestr) 
{ 
	var flag = true;  
	getdate = datestr;  //fob(datestr).value; 
	if (getdate.search(/^[0-9]{4}-(0[1-9]|[1-9]|1[1-2])-((0[1-9]|[1-9])|1[0-9]|2[0-9]|3[0-1])$/)==-1)
		flag = false; 
	else 
	{ 
		var year = getdate.substr(0, getdate.indexOf('-'))  
		var transition_month=getdate.substr(0, getdate.lastIndexOf('-'));  
		var month=transition_month.substr(transition_month.lastIndexOf('-')+1, transition_month.length); 
		if (month.indexOf('0')==0) 
			month=month.substr(1,month.length); 
		var day=getdate.substr(getdate.lastIndexOf('-')+1, getdate.length); 
		if (day.indexOf('0')==0) 
			day=day.substr(1, day.length); 
		flag = true; 
	} 
	if ((month==4 || month==6 || month==9 || month==11) && (day>30)) 
		flag = false;  
	if (month == 2) 
	{ 
		if (LeapYear(year)) 
			if (day>29 || day<1) flag = false; 
			else if (day>28 || day<1) flag = false; 
	} 
	else 
		flag = true; 

	if (!flag) 
	{ 
		//alert("Please enter a valid date."); 
		return flag;
	} 
} 

function VerifyDate(year, month, day) 
{
  var regex = new RegExp(/S/);  
  if(regex.test(day)&& regex.test(month) && regex.test(year)) 
  {
    var regExp = new RegExp(/d/);
    if(!regExp.test(day)|| !regExp.test(month) || !regExp.test(year))
      return ("The date fields contains non-number.");
    var tempDateValue = year + "/" + month + "/" + day;
    if(tempDateValue.length < 6||tempDateValue.length > 10)
      return ("The length of date fields is invalid."); 
    var tempDate = new Date(tempDateValue);
    if(isNaN(tempDate))
      return ("The scope of date fields is invalid.");   
    if(parseInt(year) > 1900 && parseInt(year) < 2500 && ((tempDate.getUTCFullYear
()).toString()==year) && (tempDate.getMonth()==parseInt(month)-1) && (tempDate.getDate()
==parseInt(day)))
      return ("The date fields is OK.");
    else
      return ("The date fields is invalid.");
  }
}

function IsInteger(textField)
{
	var e = 0;
	var w = 0;
	var quantity;
	if (textField.value != "") 
	{
		quantity = parseInt(textField.value);
		if (quantity != 0 && !isNaN(parseInt(textField.value))) 
		{
			textField.value = quantity;
		}
		else 
		{ 
			alert("Please enter a valid number.");
			textField.value = "";
			textField.focus();
		}
	}

	/* other way */
	//textField.value = textField.value.replace(/[^\d]/g,'');		
}

/*
function IsFloat(textField)
{
	//var pattern = ^(-?\\d+)(\\.\\d+)?$
	var reg = new RegExp("^(-?\\d+)(\\.\\d+)?$");
	var flag;
	flag = reg.test(textField.value);
	if (!flag)
	{
		alert("Please enter a valid number.");
		//textField.value = "";
		textField.focus();
	}
}
*/

function IsFloat(num)
{
	var reg = new RegExp("^(-?\\d+)(\\.\\d+)?$");
	var flag;
	flag = reg.test(num);
	return flag;
}

function getInt(str)
{
	return str.replace(/[^\d]/g,'');
}

function AcceptFloat(textField)
{
	//var pattern = "^(-?\\d+)(\\.\\d+)?$"
	var reg = new RegExp("^(-?\\d+)(\\.\\d+)?$");
	var flag, i, str1, quantity;
	flag = reg.test(textField.value);
	if (!flag)
	{
		if (textField.value.indexOf(".") > 0)
		{
			str1 = textField.value;
			while (str1.indexOf(".") < str1.lastIndexOf("."))
			{
				i = str1.lastIndexOf(".");
				str1 = str1.substr(0, i)
			}
			str1 = str1.replace(/[^\d^\.]/g, "");
			textField.value = str1;
		}
		else if (textField.value != "")
		{
			quantity = parseInt(textField.value);
			if (quantity != 0 && !isNaN(parseInt(textField.value))) 
			{
				textField.value = quantity;
			}
			else
			{
				alert("Please enter a valid number.");
				textField.value = "";
				textField.focus();
			}
		}
	}
}

/*
function VerifyEmail(email)
{
	var flag;
	var pattern = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
	//var pattern = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+/;
	flag = pattern.test(email);
	if (flag)
	{
		//alert("Your email address is correct!");
		return true;
	}
	else
กก{
		//alert("Please try again!");
		return false;
	}
}
*/

function VerifyEmail(email) 
{
	invalidChars = " /:,;"
	if (email == "") {	// cannot be empty
	  //alert("Please enter your email address.");
	  return false
        }
	for (i=0; i<invalidChars.length; i++) 
	{	// does it contain any invalid characters?
		badChar = invalidChars.charAt(i)
		if (email.indexOf(badChar,0) > -1) 
		{
			return false
		}
  }
  atPos = email.indexOf("@",1)	// there must be one "@" symbol
  if (atPos == -1) 
  {
		return false
  }
  if (email.indexOf("@",atPos+1) != -1) 
  {	// and only one "@" symbol
		return false
  }
  periodPos = email.indexOf(".",atPos)
  if (periodPos == -1) 
  {			// and at least one "." after the "@"
		return false
  }
  if (periodPos+3 > email.length)	
  { // must be at least 2 characters after the "."
		return false
  }
  return true
}