/* ### Admin Validation Functions ###
/* 	### Gets control object
	### Uses object "title" property to refer to control
   ### */

function allowZero(control)
{
	if (control.value == "")
	{
		control.value=0;
	}	
}

function doDynNrCheck(control,type,min,max)
{
	if(control)
	{
		var strControlTitle = "Textbox";
		if (control.title)
		{
			strControlTitle = control.title;
		}
		if (control.value != ""&&(type=="INT"||type=="DBL"||type=="NULL"))
		{
			// only allow numbers to be entered
			var checkOK = "0123456789";
			var intExample = 100;
			if (type=="DBL"||type=="NULL")
			{
				checkOK = "0123456789.,";
				intExample = 1700.85;
			}
			var checkStr = control.value;
			var allValid = true;
			var allNum = "";
			for (i = 0;  i < checkStr.length;  i++)
			{
				ch = checkStr.charAt(i);
				for (j = 0;  j < checkOK.length;  j++)
				if (ch == checkOK.charAt(j))
				{
					break;
				}
				if (j == checkOK.length)
				{
					allValid = false;
					break;
				}
				if (ch != ",")
				allNum += ch;
			}
			if (!allValid)
			{
				alert("Please enter digits only in the \"" + strControlTitle + "\" field. [i.e. " + intExample + "]");
				return (false);
			}
			if (allValid && min)
			{
				if (control.value<min)
				{
					alert("The \"" + strControlTitle + "\" field cannot be below a minimum value of [" + min + "]");
					return (false);
				}
			}
			if (allValid && max)
			{
				if (control.value>max)
				{
					alert("The \"" + strControlTitle + "\" field cannot be above a maximum value of [" + max + "]");
					return (false);
				}
			}
			else
			{
				return (true);
			}
		}	
		if (control.value == ""&&type=="NULL")
		{
			control.value=0;
			return (true);
		}	
		else
		{
			alert("Please fill in the \"" + strControlTitle + "\" field.");
			return (false);
		}
	}
	else
	{
		alert("A non-existant control has been passed!");
	}
}

function doIntCheck(control)
{
	if (control.value != "")
	{
		// only allow numbers to be entered
		var checkOK = "0123456789";
		var checkStr = control.value;
		var allValid = true;
		var allNum = "";
		for (i = 0;  i < checkStr.length;  i++)
		{
			ch = checkStr.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
			if (ch == checkOK.charAt(j))
			{
				break;
			}
			if (j == checkOK.length)
			{
				allValid = false;
				break;
			}
			if (ch != ",")
			allNum += ch;
		}
		if (!allValid)
		{
			alert("Please enter digits only in the \"" + control.title + "\" field. [i.e. 100]");
			return (false);
		}
		else
		{
			return (true);
		}
	}
	else
	{
		alert("Please fill in the \"" + control.title + "\" field.");
		return (false);
	}
}

function doDblCheck(control)
{
	if (control.value != "")
	{
		// only allow numbers to be entered
		var checkOK = "0123456789.,";
		var checkStr = control.value;
		var allValid = true;
		var allNum = "";
		for (i = 0;  i < checkStr.length;  i++)
		{
			ch = checkStr.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
			if (ch == checkOK.charAt(j))
			{
				break;
			}
			if (j == checkOK.length)
			{
				allValid = false;
				break;
			}
			if (ch != ",")
			allNum += ch;
		}
		if (!allValid)
		{
			alert("Please enter only digits in the \"" + control.title + "\" field. [i.e. 1700.50]");
			return (false);
		}
		else
		{
			return (true);
		}
	}
	else
	{
		alert("Please fill in the \"" + control.title + "\" field.");
		return (false);
	}
}

function doCboCheck(control,strDefault)
{
	if(control.value=="NULL" || control.value == "" || control.value == strDefault)
	{
		alert("Please select the " + control.title + ".");
		return (false);
	}
}

function doTxtCheck(control)
{
	if (control.value == "")
	{
		alert("Please fill in the \"" + control.title + "\" field.");
		return (false);
	}
}

function doDateCheck(control)
{
	if (control.value == "")
	{
		alert("Please provide a \"yyyy/mm/dd\" format date value for the \"" + control.title + "\" field.");
		return (false);
	}

	var dtCh= "/";
	var minYear=1900;
	var maxYear=2200;
	var daysInMonth = DaysArray(12)
	var pos1=control.value.indexOf(dtCh)
	var pos2=control.value.indexOf(dtCh,pos1+1)
	//alert("substring: " + control.value.substring(0,pos1));
	var strYear = control.value.substring(0,pos1)
	var strMonth = control.value.substring(pos1+1,pos2)
	var strDay = control.value.substring(pos2+1)
	//alert("day: " + strDay);
	//alert("month: " + strMonth);
	//alert("year: " + strYear);
	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 : dd/mm/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")
		alert(strDay);
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		//alert(strYear);
		return false
	}
	if (control.value.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(control.value, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
	return true

}


function doEmailCheck(control)
{
	if ((control.value==null)||(control.value==""))
	{
		alert("Please enter an email address")
		control.focus()
	    	allOK = false;
		return false;
	}
	if (echeck(control.value)==false){
		//control.value=""
		control.focus()
	    	allOK = false;
		return false;
	}
}

function echeck(str) 
{
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		alert("Invalid E-mail address")
		return false
	}

	//@ sign at start or end of string
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		alert("Invalid E-mail address")
		return false
	}

	//. (dot) at start or end of string
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Invalid E-mail address")
		return false
	}

	if (str.indexOf(at,(lat+1))!=-1){
	alert("Invalid E-mail address")
	return false
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	alert("Invalid E-mail address")
	return false
	}

	if (str.indexOf(dot,(lat+2))==-1){
	alert("Invalid E-mail address")
	return false
	}

	if (str.indexOf(" ")!=-1){
	alert("Invalid E-mail address")
	return false
	}

 	return true					
}

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
}