function checkSubscribe(myform)
{
	var subscriber = myform.emailSubscribe.value;

	if (subscriber == "Subscribe")
	{
		subscriber = '';
		return subscriber;
	}
}

function check(box)
{
	setRestrict();

	var myform = document.forms[0];
        var count = 0;
	var choice = myform.elements[box.name];

	if (box.value == '')
	{
		for (i=0; i<choice.length; i++)
		{
			if(choice[i].checked)
			{
				if (choice[i].value != '')
				{
					choice[i].checked = choice[i].unchecked;
				}
			}
		}
		setRestrict();
	}else
	{
		for (i=0; i<choice.length; i++)
		{
			if(choice[i].checked)
			{
				if(choice[i].value == '')
				{
					choice[i].checked = choice[i].unchecked;
				}else
				{
					count = count + 1;
					if(count > 3)
					{
						changeRestrict();
						box.checked = box.unchecked;
						break;
					} else
					{	setRestrict();
					}
				}
			}
		}
	}
}


function hideReveals()
{
	var questions = getElementsByClassName("reveal");
	if (questions)
	{
		for(var i=0, il=questions.length; i<il; i+=1)
		{
			questions[i].className += "hide";
		}
	}
}

function revealNext(question)
{
	hideReveals();
	var nextclass = question.id;
	var nextquestions = getElementsByClassName(nextclass);
	if (nextquestions)
	{
		for(var i=0, il=nextquestions.length; i<il; i+=1)
		{
			nextquestions[i].className = nextclass + " reveal";
		}
	}
	
}

/*	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/  
*/	
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};