var num;
var name;

function updateForm(key, key2, table, toDiv) {
	var xmlhttp;
    var requestUrl = "/includes/services.php";
    requestUrl += "?key="+key;
    requestUrl += "\&key2="+key2;
    requestUrl += "\&table="+table;
	if (window.XMLHttpRequest) {
		// code for IE7+, Firefox, Chrome, Opera, Safari
		xmlhttp=new XMLHttpRequest();
	} else {
		// code for IE6, IE5
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}

	xmlhttp.onreadystatechange=function() { 
		if (xmlhttp.readyState==4){
			if (xmlhttp.status==200 || !xmlhttp.status){
				if (toDiv != "") document.getElementById(toDiv).innerHTML=xmlhttp.responseText;
			} else {
				alert("problem processing "+xmlhttp.status);
			}
	    }
	}
	xmlhttp.open("GET",requestUrl,true);
	xmlhttp.send();
}

function Swap(num,name){
	var Image1=new Image();
	Image1.src=name;
	document.images[num].src = Image1.src;
}

// Email Validation. Written by PerlScriptsJavaScripts.com
function check_email(e) {
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";
	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
			return (false);
		}	
	} 
	if (document.images) {
		re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
		re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
		if (!e.match(re) && e.match(re_two)) {
			return (-1);		
		} 
	}
}

function check_form(f) { // f is the form (passed using the this keyword)
	// check the first email address ( the exclamation means "not" )
	if(!check_email(f.email.value)){
		alert("Invalid email detected.");
		f.email.focus(); 
		// if the browser is Netscape 6 or IE
		if(document.all || document.getElementByID){
			// change the color of text field
			f.email.style.background = "yellow";
		}
		// make sure the form is not submitted
		return false;
	}

	// check the second email address
	if(!check_email(f.emailTwo.value)){
		alert("Invalid email detected.");
		f.emailTwo.focus(); 
		if(document.all || document.getElementByID){
			f.emailTwo.style.background = "yellow";
		}
		return false;
	}
	if (f.email.value != f.emailTwo.value){
		alert ("Your email addresses do not match.");
		f.email.focus();
		if(document.all || document.getElementByID){
			f.emailTwo.style.background = "yellow";
			f.email.style.background = "yellow";
		}
		return false;
	}
	if (f.pass.value != f.passTwo.value){
		alert ("Your passwords do not match.");
		f.pass.focus();
		if(document.all || document.getElementByID){
			f.passTwo.style.background = "yellow";
			f.pass.style.background = "yellow";
		}
		return false;
	}
}

function isReady(form){
	if (form.elements['subCat1[]'].value==""){
		alert ("You must choose at least one sub category");
		form.elements['subCat1[]'].focus();
		return false;
	}
	if (form.elements['subCat2[]'].value==""){
		alert ("You must choose at least one sub category");
		form.elements['subCat2[]'].focus();
		return false;
	}
	if (form.elements['subCat3[]'].value==""){
		alert ("You must choose at least one sub category");
		form.elements['subCat3[]'].focus();
		return false;
	}
	if (form.elements['subCat4[]'].value==""){
		alert ("You must choose at least one sub category");
		form.elements['subCat4[]'].focus();
		return false;
	}
	if (form.variety.value == ""){
		alert ("You must enter a variety");
		form.variety.focus();
		return false;
	}
	if (form.description.value == ""){
		alert ("You must enter a description");
		form.description.focus();
		return false;
	}
	if (form.dayRangeLow.value == ""){
		alert ("You must enter a Days to Maturity range");
		form.dayRangeLow.focus();
		return false;
	}
	if (form.dayRangeHi.value == ""){
		alert ("You must enter a Days to Maturity range");
		form.dayRangeHi.focus();
		return false;
	}
	if ((form.cornell_recommended[0].checked == false) && (form.cornell_recommended[1].checked==false)){
		alert("You must specify whether or not this variety is on the Cornell Recommended list");
		return false;
	} 
}

function alertDelete (){
	var confirmed= confirm("This will permanently delete this variety from the database.  Are you sure you really want to do this?");
	if (confirmed== false){
		return false;
	}
}

function alertDelete (){
var confirmed= confirm("This will permanently delete this variety from the database.  Are you sure you really want to do this?");
	if (confirmed== false){
		return false;
	}
}

function checkSearchForm(form){
	if (form.variety.value == ""){
		alert ("You must enter your search text");
		form.variety.focus();
		return false;
	}
}

function warning(){
		_confirmation = confirm("Are you sure you want to delete this rating?");
		if (_confirmation == true){
				return true;
		}else{
				return false;
		}
}

// PickList script- By Sean Geraty (http://www.freewebs.com/sean_geraty/)
// Visit JavaScript Kit (http://www.javascriptkit.com) for this JavaScript and 100s more
// Please keep this notice intact

// Control flags for list selection and sort sequence
// Sequence is on option value (first 2 chars - can be stripped off in form processing)
// It is assumed that the select list is in sort sequence initially
var singleSelect = true;  // Allows an item to be selected once only
var sortSelect = true;  // Only effective if above flag set to true
var sortPick = true;  // Will order the picklist in sort sequence

// Initialise - invoked on load
function initPickList() {
  var selectList = document.getElementById("SelectList");
  var selectOptions = selectList.options;
  var selectIndex = selectList.selectedIndex;
  var pickList = document.getElementById("PickList");
  var pickOptions = pickList.options;
  //pickOptions[0] = null;  // Remove initial entry from picklist (was only used to set default width)
  if (!(selectIndex > -1)) {
    selectOptions[0].selected = true;  // Set first selected on load
    selectOptions[0].defaultSelected = true;  // In case of reset/reload
  }
  selectList.focus();  // Set focus on the selectlist
}

// Adds a selected item into the picklist
function addIt() {
  var selectList = document.getElementById("SelectList");
  var selectIndex = selectList.selectedIndex;
  var selectOptions = selectList.options;
  var pickList = document.getElementById("PickList");
  var pickOptions = pickList.options;
  var pickOLength = pickOptions.length;
  // An item must be selected
  while (selectIndex > -1) {
    pickOptions[pickOLength] = new Option(selectList[selectIndex].text);
    pickOptions[pickOLength].value = selectList[selectIndex].value;
    // If single selection, remove the item from the select list
    if (singleSelect) {
      selectOptions[selectIndex] = null;
    }
    if (sortPick) {
      var tempText;
      var tempValue;
      // Sort the pick list
      while (pickOLength > 0 && pickOptions[pickOLength].value < pickOptions[pickOLength-1].value) {
	tempText = pickOptions[pickOLength-1].text;
	tempValue = pickOptions[pickOLength-1].value;
	pickOptions[pickOLength-1].text = pickOptions[pickOLength].text;
	pickOptions[pickOLength-1].value = pickOptions[pickOLength].value;
	pickOptions[pickOLength].text = tempText;
	pickOptions[pickOLength].value = tempValue;
	pickOLength = pickOLength - 1;
      }
    }
    selectIndex = selectList.selectedIndex;
    pickOLength = pickOptions.length;
  }
  selectOptions[0].selected = true;
}

// Deletes an item from the picklist
function delIt() {
  var selectList = document.getElementById("SelectList");
  var selectOptions = selectList.options;
  var selectOLength = selectOptions.length;
  var pickList = document.getElementById("PickList");
  var pickIndex = pickList.selectedIndex;
  var pickOptions = pickList.options;
  while (pickIndex > -1) {
    // If single selection, replace the item in the select list
    if (singleSelect) {
      selectOptions[selectOLength] = new Option(pickList[pickIndex].text);
      selectOptions[selectOLength].value = pickList[pickIndex].value;
    }
    pickOptions[pickIndex] = null;
    if (singleSelect && sortSelect) {
      var tempText;
      var tempValue;
      // Re-sort the select list
      while (selectOLength > 0 && selectOptions[selectOLength].value < selectOptions[selectOLength-1].value) {
	tempText = selectOptions[selectOLength-1].text;
	tempValue = selectOptions[selectOLength-1].value;
	selectOptions[selectOLength-1].text = selectOptions[selectOLength].text;
	selectOptions[selectOLength-1].value = selectOptions[selectOLength].value;
	selectOptions[selectOLength].text = tempText;
	selectOptions[selectOLength].value = tempValue;
	selectOLength = selectOLength - 1;
      }
    }
    pickIndex = pickList.selectedIndex;
    selectOLength = selectOptions.length;
  }
}

// Selection - invoked on submit
function selIt(btn) {

  var pickList = document.getElementById("PickList");
  var pickOptions = pickList.options;
  var pickOLength = pickOptions.length;
  if (pickOLength < 1) {
    return false;
  }
  for (var i = 0; i < pickOLength; i++) {
    pickOptions[i].selected = true;
  }
  return true;
}

function toggleDivVisibility(divLabelElem, divToggleElem) {
	if(divToggleElem.style.display == "block") {
		divToggleElem.style.display = "none";
    		divLabelElem.innerHTML = "Show";
  	} else {
  		divToggleElem.style.display = "block";
		divLabelElem.innerHTML = " Hide";
	}
}