// JavaScript Document
function is_empty(string_val)
{
  return (string_val == "" || string_val == null);
}

function validateWExcep(current_form, reNonManFlds) //Validate with exceptions
// example of use: onsubmit="return validateWExcep(this, /Employee_ID|MI|Employee_Type|cbxInactive|Branch/);"
{
	var missing_fields = new Array()
	//var reNonManFlds = /lname|fname|login|pwd/; // names of non-mandatory (exception) fields in a RegEx stmt.
	var total_missing = 0
	for (counter = 0; counter < current_form.length; counter++)
	{
		if (current_form[counter].type == "text")
		{ 
			if (current_form[counter].name.search(reNonManFlds) == -1) //if the current name is not in the exception list
			{
			
				if (is_empty(current_form[counter].value))
				{
					missing_fields[total_missing] = current_form[counter];
					total_missing++;
				}
			}
		}
	}
	// Any missing fields?
	if (total_missing > 0)
	{
		var missing_message = "The following required" +
			(total_missing == 1 ? " field " : " fields ") +
			"appear to be empty:" +
			"\n______________________________\n\n"
			
		// Loop through the missing fields
		for (counter = 0; counter < missing_fields.length; counter++)
		{
			missing_message += missing_fields[counter].name + "\n"
		}
		
		// Finish up and display the message
		missing_message += "\n______________________________\n\n" +
			"Please fill in these fields and then resubmit."
		alert(missing_message)
		
		// For emphasis, put the focus on the first missing field
		missing_fields[0].focus();
		return false;		
	}
	else 
	{
		// Otherwise, go ahead and submit
		//current_form.submit()
		return true;
	}
}

function validate(current_form, reManFlds) //Validate with exceptions
{
	var missing_fields = new Array()
	//var reManFlds = /lname|fname|login|pwd/; // names of mandatory (exception) fields in a RegEx stmt.
	var total_missing = 0
	for (counter = 0; counter < current_form.length; counter++)
	{
		if (current_form[counter].type == "text")
		{ 
			if (current_form[counter].name.search(reManFlds) > -1) //if the current name is in the mandatory list
			{
			
				if (is_empty(current_form[counter].value))
				{
					missing_fields[total_missing] = current_form[counter];
					total_missing++;
				}
			}
		}
	}
	// Any missing fields?
	if (total_missing > 0)
	{
		var missing_message = "The following required" +
			(total_missing == 1 ? " field " : " fields ") +
			"appear to be empty:" +
			"\n______________________________\n\n"
			
		// Loop through the missing fields
		for (counter = 0; counter < missing_fields.length; counter++)
		{
			missing_message += missing_fields[counter].name + "\n"
		}
		
		// Finish up and display the message
		missing_message += "\n______________________________\n\n" +
			"Please fill in these fields and then resubmit."
		alert(missing_message)
		
		// For emphasis, put the focus on the first missing field
		missing_fields[0].focus();
		return false;		
	}
	else 
	{
		// Otherwise, go ahead and submit
		//current_form.submit()
		return true;
	}
}

/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 * See isDate() fucntion to start validation.  Returns false if error is found and each error triggers
 * an alert message.  Otherwise returns true.  
 * Example use:
     <form name='form1' action='SHAdmProgramAddEdit.php' method='post' onsubmit="return chkThisDate(document.getElementById('recordeddate'), 'Date Recorded'); certMakePostArray();">
     . . . 
     <input id="recordeddate" type='text' size='15' maxlength='' name='recorded_date' value='<?php echo $row[20]?>'
            onblur="chkThisDate(this);") />
     . . .       
    <script>
    function chkThisDate(obDate) { 
        if (!is_empty(obDate.value)) {
            if (fieldLabel === undefined) {  
                if (!isDate(obDate.value)) {
                    return false;
                }            
            } else {  
                if (!isDate(obDate.value, fieldLabel)) {
                    return false;
                }
            }
        }
        return true
    }
    </script>
 */
// 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, fieldLabel){
    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)
    }
    if ( fieldLabel === undefined ) {
        fieldLabel = "";
    } else {
        fieldLabel = ' for ' + fieldLabel;
    }
    month=parseInt(strMonth)
    day=parseInt(strDay)
    year=parseInt(strYr)
    if (pos1==-1 || pos2==-1){
        alert("The date format" + fieldLabel + " should be : mm/dd/yyyy")
        return false
    }
    if (strMonth.length<1 || month<1 || month>12){
        alert("Please enter a valid month" + fieldLabel)
        return false
    }
    if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
        alert("Please enter a valid day" + fieldLabel)
        return false
    }
    if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
        alert("Please enter a valid 4 digit year" + fieldLabel + " between "+minYear+" and "+maxYear)
        return false
    }
    if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
        alert("Please enter a valid date" + fieldLabel)
        return false
    }
    return true
}

function ValidateForm(){
    var dt=document.frmSample.txtDate
    if (isDate(dt.value)==false){
        dt.focus()
        return false
    }
    return true
}