//Debug function equiv to print_r() in PHP
function dump(arr,level) {
var dumped_text = "";
if(!level) level = 0;

//The padding given at the beginning of the line.
var level_padding = "";
for(var j=0;j<level+1;j++) level_padding += "    ";

if(typeof(arr) == 'object') { //Array/Hashes/Objects
 for(var item in arr) {
  var value = arr[item];
 
  if(typeof(value) == 'object') { //If it is an array,
   dumped_text += level_padding + "'" + item + "' ...\n";
   dumped_text += dump(value,level+1);
  } else {
   dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
  }
 }
} else { //Stings/Chars/Numbers etc.
 dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
}
return dumped_text;
}

//construction my email address
function myEmail(user, atSign, domain, ext)
{
	return (document.location.replace("mailto:"+user+atSign+domain+ext));
}

//Function for checking if an element contains data or not. 
function hasData(element, name)
{
	var strval = element.value;

	if (strval.length == 0)
	{
		alert(name + " cannot be empty!");
		return false;
	}
	else
	{
		return true;
	}
}

//Function for checking if an element contains numeric data. 
function isNumeric(element)
{
	var validChars = "0123456789.";
	var numeric = true;

	for (x=0; x<element.length; x++)
	{
		c = element.charAt(x);
		if (validChars.indexOf(c) == -1)
			numeric = false;
	}

	return numeric;
}

/* Function for checking if an email address is valid or not,
then it checks if the valid email address matches the
repeated email address. */
function isEmail(email)
{
	atPos = email.value.indexOf("@");
	dotPos = email.value.lastIndexOf(".");

	if ((atPos < 1) || ((dotPos - atPos) < 2))
	{
		return false;
	}
	
	return true;
}

//Validates a url address
function isURL(url)
{
        httpPos = url.value.indexOf("http://");
        dotPos = url.value.lastIndexOf(".");

	if ((httpPos) || (dotPos < 9))
	{
		return false;
	}

        return true;
}

//Set anything in stylesheet
//setCSS(".correctBox", "display", "block");
function setCSS(selector, property, value)
{
	for (var s=0; s<document.styleSheets.length; s++)
	{
		var sheet = document.styleSheets[s];
		var css = sheet.rules ? sheet.rules : sheet.cssRules;

		for (var i=0; i<css.length; i++)
		{
			if (css[i].selectorText == selector)
				css[i].style[property] = value;
		}
	}
}

function hasData(element)
{
	if (element.value.length == 0)
	{
		return false;
	}
	else
	{
		return true;
	}
}

var errorCount = 0;
var eCorrectCache = new Array(); //Elements found already having been corrected
var eErrorCache = new Array(); //Elements found already containing errors

//Sets preset variables (derived from required elements array)
function setPresets(reqElements)
{
	eErrorCache = reqElements;
	errorCount = reqElements.length;
}

//Adds selected value to errorCount
function addError(value)
{
	errorCount += value;
}

//Removes selected value from errorCount
function removeError(value)
{
	if (errorCount >= 0)
	{
		errorCount -= value;
	}
}

//Sets status of element. Displays correct, or error box
function setStatus(element, value)
{
	var msg; //Correct, or Incorrect message
	var existent = false; //False if not in either cache array, else true
	var base = "../../images/validation/"; //Image location

	if (value == true)
	{
		//True error message
		msg = "correct.gif";
		
		for (var i=-1; i<eCorrectCache.length; i++)
		{
			if (eCorrectCache[i] == element.name)
			{
				existent = true;
			}

			//Remove element name from eErrorCache
			for (var x=0; x<eErrorCache.length; x++)
                        {
	                        if (eErrorCache[x] == element.name)
                                {
                                        eErrorCache.splice(x, 1);
                                }
                        }
		}

		//Remove error and add element name from eCorrectCache if not already existent in eCorrectCache
		if (existent == false)
		{
			removeError(1);
			eCorrectCache.push(element.name);
		}

		//Debug line:
		//alert("Error Cache: \n" + dump(eErrorCache) + "\nCorrect Cache: \n" + dump(eCorrectCache) + "\nerrorCount = " + errorCount);
	}
	else
	{
		//False error message
		msg = "error.gif";

		for (var i=-1; i<eErrorCache.length; i++)
                {
                        if (eErrorCache[i] == element.name)
                        {
                                existent = true;
                        }

			//Remove element name from eCorrectCache
			for (var x=0; x<eCorrectCache.length; x++)
                        {
                                if (eCorrectCache[x] == element.name)
                                {
                                        eCorrectCache.splice(x, 1);
                                }
                        }
                }

		//Add error; and element name to eErrorCache if not already existent in eErrorCache
                if (existent == false)
                {
			addError(1);
			eErrorCache.push(element.name);
		}

		//Debug line:
		//alert("Error Cache: \n" + dump(eErrorCache) + "\nCorrect Cache: \n" + dump(eCorrectCache) + "\nerrorCount = " + errorCount);
	}

	//Set array position to whatever, depending on CSS in parent. 
	if (element.parentNode.parentNode.getElementsByTagName('div')[2])
	{
		element.parentNode.parentNode.getElementsByTagName('div')[2].style.background = "url("+base+msg+") no-repeat";
	}
	else
	{
		//Creates CSS error container
		var d = document.createElement('div');
		//Debug line:
		/*d.style.border = "1px solid #cccccc";*/
        	d.style.cssFloat = "left";
	        d.style.padding = "4px";
		d.style.margin = "3px 0 0 0";
		d.style.height = "14px";
		d.style.width = "15px";
		d.style.background = "url("+base+msg+") no-repeat";

		element.parentNode.parentNode.appendChild(d);
	}
}

//Validate form
function validate(element)
{
	var set = false;
	var elementName = element.name;

	//Certain element rules by name; generics preset
	switch (elementName)
	{
		case "phone":
			if (isNumeric(element.value) && element.value.length >= 8)
        	        {
	                        set = true;
                	}
			break;
		case "mobile":
			if (isNumeric(element.value) && element.value.length >= 10)
                        {
                                set = true;
                        }
                        break;
		case "postcode":
			if (isNumeric(element.value) && element.value.length >= 4)
			{
				set = true;
			}
			break;
		case "email":
			if (isEmail(element))
			{
				set = true;
			}
			break;
		case "website":
			if (isURL(element))
			{
				set = true;
			}
			break;
		case "details":
			if (element.value.length > 10)
			{
				set = true;
			}
			break;
		case "seccode":
			if (element.value.length == 6)
			{
				set = true;
			}
			break;
		default: 
			if (element.value.length >= 3)
			{
				set = true;
			}
	}

	if (set)
	{
		setStatus(element, true);
	}
	else
	{
		setStatus(element, false);
	}
}

//Final form validation check. Verifies errorCount <= 0
function noErrors()
{
	if (errorCount <= 0)
	{
		return true;
	}
	else
	{
		//Message display if errors
		alert("Please fill in all required fields");
		return false;
	}
}