//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// DATA SUPPLIED FUNCTIONS
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//function trim(theString)
function trim(theString)
{
     var resultString = theString;
     if (theString.indexOf(" ") == 0) { // trim first blank
        resultString = theString.substring(1, theString.length);
     }
    if (resultString.lastIndexOf(" ") == resultString.length) {// trim last blank
        resultString = resultString.substring(1,theString.length-1);
   } return resultString
 }

//function HasData(frm, item, type)
function HasData(frm, item, type, errmsg)
{
	var str, regexp
	//text box
	if ((type == 'textbox')||(type == 'textarea'))
	{
		if (trim(eval('document.'+frm+'.'+item+'.value')) == '')
			{
				alert(errmsg);
				eval('document.'+frm+'.'+item+'.focus();');
				return false;
			}		
		else
			return true;
	}
	else if (type == 'url')
	{
		str = trim(eval('document.'+frm+'.'+item+'.value'))
		regexp = /(http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
		if(!regexp.test(str))
		{
			alert(errmsg);
			eval('document.'+frm+'.'+item+'.focus();');
			return false;
			}		
		else
			return true;
	}
	else if (type == 'email')
	{
		str = trim(eval('document.'+frm+'.'+item+'.value'))
		regexp = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		if(!regexp.test(str))
		{
			alert(errmsg);
			eval('document.'+frm+'.'+item+'.focus();');
			return false;
			}		
		else
			return true;
	}
	else if (type == 'checkbox')
	{
		if (eval('document.'+frm+'.'+item+'.checked') == false)
			{
				alert(errmsg);
				eval('document.'+frm+'.'+item+'.focus();');
				return false;
			}
		else
			return true;
	}
	else if (type == 'select')
	{
		if (eval('document.'+frm+'.'+item+'.options[document.'+frm+'.'+item+'.selectedIndex].value') == '')
			{
				alert(errmsg);
				eval('document.'+frm+'.'+item+'.focus();');
				return false;
			}
		else
			return true;
	}
	//invalid type
	else
	{
		alert('invalid type');
	}
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// DATE VALIDATION FUNCTIONS
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
	return true
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// UPLOAD VALIDATION FUNCTIONS
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//-------------------------------------------------------------------
//function isValidImage(filename)
//-------------------------------------------------------------------
function isValidImage(fileName)
{
	
	//local vars
	var fileExtension = fileName.substring(fileName.lastIndexOf('.')+1 ).toLowerCase();	
	var isCorrect = false;

	if (fileName.lastIndexOf('.') < 1) {
		return false;
	}
	
	//valid image file
	if(	fileExtension == 'bmp' || 
		fileExtension == 'fif' ||
		fileExtension == 'gif' ||
		fileExtension == 'ief' ||
		fileExtension == 'jpe' ||
		fileExtension == 'jpeg' ||
		fileExtension == 'jpg' || 
		fileExtension == 'tif' || 
		fileExtension == 'tiff' || 
		fileExtension == 'png' ||
		fileExtension == 'swf' )
	{
		isCorrect = true;
	}
	
	//return
	return isCorrect;

}

//-------------------------------------------------------------------
//function isValidAttachment(filename)
//-------------------------------------------------------------------
function isValidAttachment(fileName)
{

	//local vars
	var fileExtension = fileName.substring(fileName.lastIndexOf('.')+1 ).toLowerCase();	
	var isCorrect = false;
	
	//valid attachment
	if(	fileExtension !='asp' &&
		fileExtension !='aspx' &&
		fileExtension !='bas' &&
		fileExtension !='bat' &&
		fileExtension !='bin' &&
		fileExtension !='cgi' &&
		fileExtension !='class' &&
		fileExtension !='com' &&
		fileExtension !='cmd' &&
		fileExtension !='cpl' && 
		fileExtension !='cs' &&  
		fileExtension !='dll' && 
		fileExtension !='dms' &&
		fileExtension !='exe' &&
		fileExtension !='jar' &&
		fileExtension !='lnk' &&
		fileExtension !='pif' && 
		fileExtension !='pl' && 
		fileExtension !='py' && 
		fileExtension !='reg' &&
		fileExtension !='sea' &&
		fileExtension !='vbs' && 
		fileExtension !='wsh' )
	{  		
		isCorrect = true;
	}
		
	//return
	return isCorrect;			
}

//-------------------------------------------------------------------
//function isValidCSS(filename)
//-------------------------------------------------------------------
function isValidCSS(fileName)
{
	var fileExtension = fileName.substring(fileName.lastIndexOf('.')+1 ).toLowerCase();	
	
	if (fileExtension == 'css' && fileName.lastIndexOf('.') > 0) {
		return true;
	}
	
	return false;
}

//-------------------------------------------------------------------
//function isValidSupportingFile(filename)
//-------------------------------------------------------------------
function isValidSupportingFile(fileName)
{
	var fileExtension = fileName.substring(fileName.lastIndexOf('.')+1 ).toLowerCase();	

	if (fileName.lastIndexOf('.') < 1) {
		return false;
	}
	
	if(	fileExtension !='bas' &&
		fileExtension !='bat' &&
		fileExtension !='bin' &&
		fileExtension !='cgi' &&
		fileExtension !='class' &&
		fileExtension !='com' &&
		fileExtension !='cmd' &&
		fileExtension !='cpl' && 
		fileExtension !='cs' &&  
		fileExtension !='dll' && 
		fileExtension !='dms' &&
		fileExtension !='exe' &&
		fileExtension !='jar' &&
		fileExtension !='lnk' &&
		fileExtension !='pif' && 
		fileExtension !='pl' && 
		fileExtension !='py' && 
		fileExtension !='reg' &&
		fileExtension !='sea' &&
		fileExtension !='vbs' && 
		fileExtension !='wsh' )
	{
		return true;
	}
	
	return false;
}

//-------------------------------------------------------------------
//function isValidEmailAddress(emailString)
//-------------------------------------------------------------------
function isValidEmailAddress(emailString)
{
    var str = emailString
    var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
    if (re.test(str))
			return true
	else
	{
        alert("Please input a valid email address!")
        document.login.stremail.focus();
        return false
    }
    
}