/*
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'                                                                '
'   source       :   form.inc                                 '
'   Description  :   included in sse.inc. user procedures        '
'                                                                '
'                                                                '
'   Cerium content manager (based on the Sellenger site engine) 									 '
'	(c) 1997-2012 Jos Verhoeff, cerium             '
'   For more information http://www.cerium.nl              '
'                                                                '
'                                                                '
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
*/

/**
 * DHTML date validation script for dd/mm/yyyy. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// 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 strDay=dtStr.substring(0,pos1)
	var strMonth=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 : 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")
		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
}





function checkForm(O) {
	var oFields = O.getElementsByTagName("INPUT")
	for (var i=0;i<oFields.length;i++) {
		if (oFields[i].getAttribute("isobligatory")) {
			if (oFields[i].getAttribute("isobligatory") == "true") {
				if (oFields[i].type == "checkbox") {
					if (!oFields[i].checked) {
						alert(msgCheckfields + ': ' + oFields[i].name)
						oFields[i].focus()
						return false;
					}
				} else {
					if (!oFields[i].value) {
						alert(msgNotEmpty+': ' + oFields[i].name)
						oFields[i].focus()
						return false;
					}
				}
			} else { // id of another field, if this has content, ours must have too
				var oRef = document.getElementById(oFields[i].getAttribute("isobligatory"))
				if (oRef) {
					if (oRef.value) {
						if (!oFields[i].value) {
							alert(msgNotEmpty + ': ' + oFields[i].name)
							oFields[i].focus()
							return false;
						}
					}
				}
			}
		}
		if (oFields[i].getAttribute("doformat")) {
			switch (oFields[i].getAttribute("doformat")) {
				case "firstcapital" :
					var FC = oFields[i].value.substring(0,1)
					FC = FC.toUpperCase()
					oFields[i].value = FC + oFields[i].value.substring(1,oFields[i].value.length).toLowerCase(); 
					break;
				case "capital" :
					oFields[i].value = oFields[i].value.toUpperCase(); 
					break;
			}
		}
		if (oFields[i].getAttribute("allowtypes")) {
			switch (oFields[i].getAttribute("allowtypes")) {
				case "anything" :
					break;
				case "number" :
					if (isNaN(oFields[i].value)) {
						alert(msgNumber);
						oFields[i].focus()
						return false;
					}
					break;
				case "phone" :
					// + - 0-9 and space allowed
					var S = oFields[i].value
					while(S.indexOf("+") > -1) S = S.replace("+","");
					while(S.indexOf("-") > -1) S = S.replace("-","");
					while(S.indexOf(" ") > -1) S = S.replace(" ","");
					if (isNaN(S)) {
						alert(msgPhone)
						oFields[i].focus()
						return false;
					}
					break;
				case "mail" :
					if (oFields[i].value.length == 0) break;
					if ((oFields[i].value.indexOf("@") == -1) || (oFields[i].value.indexOf(".") == -1)) {
						alert(msgEmail);
						oFields[i].focus()
						return false;
					}
					break;
				case "zipcode" :
					if (oFields[i].value.length == 0) break;
					var vval = oFields[i].value;
					vval=vval.replace(/(^\s*)|(\s*$)/g, "");
					if(!vval.match(/^[1-9][0-9]{3}[\s][A-Z]{2}$/i)) {
						alert(msgPostcode)
						oFields[i].focus()
						return false;
					}
					break;
				case "date" :
					if (oFields[i].value.length == 0) break;
					if (!isDate(oFields[i].value)) {
						alert(msgDate);
						oFields[i].focus()
						return false;
					}
					break;
			}
		}
	}
	return true;
}