/*      
 *  oOOOOo      ppPPPPPPPPPp
 * oOooooOo      PPPPPPppppppp
 * oOooooOO      PPPPPPPPPPPp
 *  oOOOOo       PPPP
 *               PPPP
 *  oOOOOo       PPPP
 * oOooooOo      PPPP
 * oOooooOO      PPPp
 *  oOOOOo      ppPPP
 **/

function checkFormValues(form) 
{	
  // Kolla alla fält. 
  for(i = 0; i < form.elements.length;i++)
  {

    if(form.elements[i].type == "text")
    {

      // Kolla om textfälten är tomma.
      if(form.elements[i].value == "" && form.elements[i].name != "CustNr" && form.elements[i].name != "SpecialNeed" && form.elements[i].name != "Plastk" && form.elements[i].name != "SprtLngth")
      {
          alert("Fältet får inte vara tomt!");
          form.elements[i].focus();
          return (false);
      }

      // Kolla om mailfältet innehåller giltlig mailadress.
      if(form.elements[i].name == "Mail")
      {
        if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.elements[i].value) == false)
        {
          alert("Fyll i en giltig email adress!");
          form.elements[i].select();
          return (false);
        }
      }

      if(form.elements[i].name == "Delivery")
      {
        if(!isDate(form.elements[i].value))
        {
          form.elements[i].select();
          return (false);
        }
      }

      if (form.elements[i].name == "Telnr") 
      {
          result = checkNumb(form.elements[i].value, "0123456789.,-+ "); 
          
          if(result != true)
          {
              alert("Felaktigt tecken: " + result);
              form.elements[i].select();
              return (false);
          }
      } 
      // Kolla så att fält innehåller numeriska tecken som de ska.
      if(form.elements[i].name == "Yd" || form.elements[i].name == "GSize" || form.elements[i].name == "RadieOnProduct" || form.elements[i].name == "RadieOnProduct" || form.elements[i].name == "Vinkel" || form.elements[i].name == "Lockwdt" || form.elements[i].name == "SprtLngth" || form.elements[i].name == "DornDiamtr" || form.elements[i].name == "DornLngth" || form.elements[i].name == "OldOrderNr" || form.elements[i].name == "ToolLevel")
      {
          result = checkNumb(form.elements[i].value, "0123456789., "); 
          
          if(result != true)
          {
              alert("Felaktigt tecken: " + result);
              form.elements[i].select();
              return (false);
          }
      }

    } // Avsluta if-sats
  } // Avsluta for loop

  return true;
	
}

function checkNumb(numbers, ValidChars)
{
  var Char;

  for (l = 0; l < numbers.length; l++) 
  { 
    Char = numbers.charAt(l); 

    if (ValidChars.indexOf(Char) == -1) 
    {
            return (Char);
    }
  }
    
  return (true);
}

// Declaring valid date character, minimum year and maximum year
var dtCh= "-";

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 strYear=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strDay=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("Datumet ska skrivas i följande format: yy-mm-dd")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Fyll i en korrekt månad! (Exempel: 07 för juli månad)")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Fyll i en korrekt dag! (Exempel: 08 för dag 8)")
		return false
	}
	if (strYear.length > 2 || year < 8){
		alert("Fyll i ett korrekt 4siffror långt år! (Exempel: 2008)")
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Var god fyll i ett giltigt datum!")
		return false
	}
return true
}