function showForm() {
   if(document.getElementById('form'))
   {
      document.getElementById('form').style.display = 'block';
      document.getElementById('noform').style.display = 'none';
   }
}

function dynamicSelect(id1, id2, id3) {
    if(document.getElementById(id1))
    {
		// Obtain references to both select boxes
		var sel1 = document.getElementById(id1);
		var sel2 = document.getElementById(id2);
		var sel3 = document.getElementById(id3);
		// Clone the dynamic select box
		var clone = sel2.cloneNode(true);
		var clone2 = sel3.cloneNode(true);
		// Obtain references to all cloned options 
		var clonedOptions = clone.getElementsByTagName("option");
		var clonedOptions2 = clone2.getElementsByTagName("option");
		// Onload init: call a generic function to display the related options in the dynamic select box
		refreshDynamicSelectOptions(sel1, sel2, sel3, clonedOptions, clonedOptions2);
		// Onchange of the main select box: call a generic function to display the related options in the dynamic select box
		sel1.onchange = function() {
			refreshDynamicSelectOptions(sel1, sel2, sel3, clonedOptions, clonedOptions2);
		};
    }
}
function refreshDynamicSelectOptions(sel1, sel2, sel3, clonedOptions, clonedOptions2) {
	// Delete all options of the dynamic select box
	while (sel2.options.length) {
		sel2.remove(0);
	}
	while (sel3.options.length) {
	        sel3.remove(0);
	}
	// Create regular expression objects for "select" and the value of the selected option of the main select box as class names
	var pattern1 = /( |^)(select)( |$)/;
	var pattern2 = new RegExp("( |^)(" + sel1.options[sel1.selectedIndex].value + ")( |$)");
	// Iterate through all cloned options
	for (var i = 0; i < clonedOptions.length; i++) {
		// If the classname of a cloned option either equals "select" or equals the value of the selected option of the main select box
		if (clonedOptions[i].className.match(pattern1) || clonedOptions[i].className.match(pattern2)) {
			// Clone the option from the hidden option pool and append it to the dynamic select box
			sel2.appendChild(clonedOptions[i].cloneNode(true));
		}
	}
	for (var i = 0; i < clonedOptions2.length; i++) {
	        // If the classname of a cloned option either equals "select" or equals the value of the selected option of the main select box
		if (clonedOptions2[i].className.match(pattern1) || clonedOptions2[i].className.match(pattern2)) {
		        // Clone the option from the hidden option pool and append it to the dynamic select box
			sel3.appendChild(clonedOptions2[i].cloneNode(true));
		}
	}
}

var dtCh= "/";
var minYear=1900;
var maxYear=2300;

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 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 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);
	}
	month=parseInt(strMonth)
	day=parseInt(strDay);
	year=parseInt(strYr);
	if (pos1==-1 || pos2==-1){
		error("3");
		return false;
	}
	if (strMonth.length<1 || month<1 || month>12){
		error("3");
		return false;
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		error("3");
		return false;
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		error("3");
		return false;
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		error("3");
		return false;
	}
return true
}

function error(error)
{
	document.getElementById('errmsg').style.display = 'block';
	document.getElementById('errmsg').innerHTML = formErrors[error];
}

function checkDate()
{
   var date = document.getElementById('month').value + '/' + document.getElementById('day').value + '/' + document.getElementById('year').value;
   if(!isDate(date))
   {
      error("3");
      return false;
   }
}

function tele(phone)
{
	var telepat = /^\(?\d{3}\)?[\s-]?\d{3}[\s-]?\d{4}$/;
        if(!telepat.test(document.getElementById(phone).value))
        {
                error("1");
		return false;
        }
}

function empty(field)
{
	var myField = document.getElementById(field);
	if(!myField.value || myField.value == "--:--" || myField.value == "xx" || myField.value == "w0")
	{
		error("2");
		return false;
	}
}

function emptyNoError(field)
{
        var myField = document.getElementById(field);
        if(!myField.value || myField.value == "--:--" || myField.value == "xx" || myField.value == "w0")
        {
                return false;
        }
}

function email(email)
{
   var emailpat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
   if (!emailpat.test(document.getElementById(email).value))
   {
      error("0");
      return (false);
   }
}

function name(name)
{
   var namepat = /^\w+-?\w+\s\w+-?\w+(\s\w+-?\w+)?$/;
   if (!namepat.test(document.getElementById(name).value))
   {
      error("4");
      return (false);
   }
}

function numppl(numppl)
{
   var numpplpat = /^([0-1][0-9]|2[0-5])$/;
   if (!numpplpat.test(document.getElementById(numppl).value))
   {
      error("5");
      return (false);
   }
}

function dblPhone(phone1, phone2)
{
   if(document.getElementById(phone1).value == document.getElementById(phone2).value)
   {
      error("6");
      return false;
   }
}

function grpTimeLimit()
{
   current_date = new Date();
   current_month = current_date.getMonth();
   current_month = current_month + 1;
   current_day = current_date.getDate();
   current_year = current_date.getYear();
   var current_monthday = current_month + "-" + current_day;

   if(document.getElementById('day').value == current_monthday)
   {
      error("7");
      return false;
   }
}

/* function checkForm(type)
{
   var type2;
   if(type == "adm-receptions")
   {
      type = "rec";
   }
   else if(type == "adm-groups")
   {
      type = "grp";
      type2 = "admin";
   }
      if(empty('name') == false || empty('email') == false)
      {
         return false;
      }
   
      if(type == "rec" || type == "grp")
      {
         if(empty('phone') == false || empty('day') == false)
         {
            return false;
         }
      } 
   
      if(type == "rec")
      {
         if(empty('year') == false || empty('month') == false || checkDate() == false)
         {
	    return false;
         }
      }
      else if(type == "grp")
      {
         if(empty('weekday') == false || empty('time') == false || empty('numppl') == false || grpTimeLimit() == false || empty('baby') == false || isInteger(document.getElementById('baby').value) == false)
         {
 	    return false;
         }
      }
      else
      {
         if(empty('inquiry') == false)
         {
   	    return false;
         }
      }

      if(type == "grp" && type2 != "admin" && numppl('numppl') == false)
      {
         return false;
      }

      if(name('name') == false || email('email') == false || tele('phone') == false || dblPhone('phone', 'phone2') == false)
      {
         return false;
      }
      
      if(document.getElementById('phone2').value && tele('phone2') == false)
      {
	 return false;
      }
      
   return true;
} */

function checkForm()
{
   if(empty('customer_name') == false || empty('company_name') == false || empty('telephone_1') == false || empty('fax') == false || empty('email') == false || (empty('from_city') == false && empty('from_postal') == false) || empty('from_state') == false || (empty('to_city') == false && empty('to_postal') == false) || empty('to_state') == false || empty('pickup_date') == false || empty('delivery_date') == false || (document.getElementById('load').value == 'LTL' && empty('skids_num') == false))
	 {
            return false;
	 }
/*	 else if(!tele('telephone_1') || (document.getElementById('phone2').value && !tele('telephone_2')) || !tele('fax') || !name('customer_name') || !email('email') || !isDate('pickup_date') || !isDate('delivery_date'))
	 {
	    return false;
	 } */
	 else
	 {
	    return true;
	 }
}

function seatCount(tablenum)
{
   arraytablenum = tablenum - 1;
   var newpplnum = document.getElementById('n' + tablenum).value;
   
   if(eval("sql_placement[\"" + arraytablenum + "\"]"))
   {
      var numpplalready = eval("sql_placement[\"" + arraytablenum + "\"]['numppl']");
   }
   else
   {
      var numpplalready = 0;
   }
   
   if(numpplalready + newpplnum > 10)
   {
      return false;
   }
}

function babySeatCount()
{
   var babyseatnum = 0;
   for(var babyseat = 1; babyseat < 21; babyseat++)
   {
      var arraybabyseat = babyseat - 1;
      if(document.getElementById('b' + babyseat).checked)
      {
         babyseatnum++;
      }
      else if(eval("sql_placement[\"" + arraybabyseat + "\"]") && eval("sql_placement[\"" + arraybabyseat + "\"]['baby']") == 1)
      {
         babyseatnum++;
      }
   }

   if(babyseatnum > 6)
   {
      error("10");
      return false;
   }
}

function checkGroupPlacement()
{
   var groupnumppl;
   var cid = document.getElementById('cid').value;
   for (var group in sql_info)
   {
      if(cid == sql_info[group]['cid'])
      {
         groupnumppl = sql_info[group]['numppl'];
      }
   }
   for (var numtable = 1; numtable < 21; numtable++)
   {
      var tablefieldname = 'n' + numtable;
      var tablefield = eval("document.getElementById(\"" + 'n' + numtable + "\").value");
      if(emptyNoError(tablefieldname) != false && isInteger(tablefield) != false)
      {
         groupnumppl = groupnumppl - tablefield;
      }

      var tablecheckbox = eval("document.getElementById(\"" + 'b' + numtable + "\")");
      if(tablecheckbox.checked)
      {
         groupnumppl--;
      }
   }

   if(groupnumppl != 0)
   {
      error("11");
      return false;
   }
}

function checkTableFields(spectablenumber)
{
   var nelement = 'n' + spectablenumber;
   var belement = 'b' + spectablenumber;
   if(emptyNoError(nelement) != false && (isInteger(document.getElementById(nelement).value) == false || seatCount(spectablenumber) == false))
   {
      error("8");
      return false;
   }
   else if(document.getElementById(belement).checked && emptyNoError(nelement) == false)
   {
      error("9");
      return false;
   }
}

function checkTableForm()
{
   if(babySeatCount() == false)
   {
      return false;
   }
   
   var badtablefield = false;

   for(var tablenumber = 1; tablenumber < 21; tablenumber++)
   {
      if(checkTableFields(tablenumber) == false)
      {
          badtablefield = true;
      }
   }

   if(badtablefield == true)
   {
      return false;
   }

   if(checkGroupPlacement() == false)
   {
      return false;
   }
}