<!--

/*
Required field(s) validation- By NavSurf
Visit NavSurf.com at http://navsurf.com
Visit http://www.dynamicdrive.com for this script
*/

function formCheck(formobj){
	//1) Enter name of mandatory fields
	var fieldRequired = Array("Name", "email", "Country", "Telephone", "Message");
	//2) Enter field description to appear in the dialog box
	var fieldDescription = Array("Name", "Email", "Country", "Telephone", "Message");
	//3) Enter dialog message
	var alertMsg = "Please complete the following fields:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}
	else{
		alert(alertMsg);
		return false;
	}
}

function checkEmail(emField){  //reference to email field passed as argument

var fieldValue = emField.value  // store field's entire value in variable

// Begin Valid Email Address Tests

	//if field is not empty
	if(fieldValue != ""){  
	var atSymbol = 0
	
		//loop through field value string
		for(var a = 0; a < fieldValue.length; a++){ 
		
			//look for @ symbol and for each @ found, increment atSymbol variable by 1
			if(fieldValue.charAt(a) == "@"){ 
			atSymbol++
			}
			
		}
		
		// if more than 1 @ symbol exists
		if(atSymbol > 1){ 
		// then cancel and don't submit form
		alert("Please Enter A Valid Email Address") 
		return false
		}
		
		// if 1 @ symbol was found, and it is not the 1st character in string
		if(atSymbol == 1 && fieldValue.charAt(0) != "@"){ 
		
		//look for period at 2nd character after @ symbol 
		var period = fieldValue.indexOf(".",fieldValue.indexOf("@")+2) 
		
		// "."  immediately following 1st "." ? 
		var twoPeriods = (fieldValue.charAt((period+1)) == ".") ? true : false 
				  
			//if period was not found OR 2 periods together OR field contains less than 5 characters OR period is in last position
			if(period == -1 || twoPeriods || fieldValue.length < period + 2 || fieldValue.charAt(fieldValue.length-1)=="."){
			// then cancel and don't submit form
			alert("Please Enter A Valid Email Address") 
			return false
			}
		  		  
		}
		// no @ symbol exists or it is in position 0 (the first character of the field)
		else{  
		// then cancel and don't submit form
		alert("Please Enter A Valid Email Address")
		return false 
		}
	}
	// if field is empty
	else{  
	// then cancel and don't submit form
	alert("Please Enter A Valid Email Address")
	return false  
	}
	
}

function check_date(field){
var checkstr = "0123456789";
var DateField = field;
var Datevalue = "";
var DateTemp = "";
var seperator = "/";
var day;
var month;
var year;
var leap = 0;
var err = 0;
var i;
   err = 0;
   DateValue = DateField.value;
   /* Delete all chars except 0..9 */
   for (i = 0; i < DateValue.length; i++) {
	  if (checkstr.indexOf(DateValue.substr(i,1)) >= 0) {
	     DateTemp = DateTemp + DateValue.substr(i,1);
	  }
   }
   DateValue = DateTemp;
   /* Always change date to 8 digits - string*/
   /* if year is entered as 2-digit / always assume 20xx */
   if (DateValue.length == 6) {
      DateValue = DateValue.substr(0,4) + '20' + DateValue.substr(4,2); }
   if (DateValue.length != 8) {
      err = 19;}
   /* year is wrong if year = 0000 */
   year = DateValue.substr(4,4);
   if (year == 0) {
      err = 20;
   }
   /* Validation of month*/
   month = DateValue.substr(2,2);
   if ((month < 1) || (month > 12)) {
      err = 21;
   }
   /* Validation of day*/
   day = DateValue.substr(0,2);
   if (day < 1) {
     err = 22;
   }
   /* Validation leap-year / february / day */
   if ((year % 4 == 0) || (year % 100 == 0) || (year % 400 == 0)) {
      leap = 1;
   }
   if ((month == 2) && (leap == 1) && (day > 29)) {
      err = 23;
   }
   if ((month == 2) && (leap != 1) && (day > 28)) {
      err = 24;
   }
   /* Validation of other months */
   if ((day > 31) && ((month == "01") || (month == "03") || (month == "05") || (month == "07") || (month == "08") || (month == "10") || (month == "12"))) {
      err = 25;
   }
   if ((day > 30) && ((month == "04") || (month == "06") || (month == "09") || (month == "11"))) {
      err = 26;
   }
   /* if 00 ist entered, no error, deleting the entry */
   if ((day == 0) && (month == 0) && (year == 00)) {
      err = 0; day = ""; month = ""; year = ""; seperator = "";
   }
   /* if no error, write the completed date to Input-Field (e.g. 13.12.2001) */
   if (err == 0) {
      DateField.value = day + seperator + month + seperator + year;
   }
   /* Error-message if err != 0 */
   else {
      alert("Please enter date in format dd/mm/yy");
      DateField.select();
	  DateField.focus();
   }
}
//-->