/* 
	Includes the named javaScript file.
*/
function include(file)
{
	var script  = document.createElement('script');
	script.src  = file;
	script.type = 'text/javascript';
	script.defer = true;
	document.getElementsByTagName('head').item(0).appendChild(script);
}

/* Fix for IE 5, which lacks Array.prototype.push */
if(typeof Array.prototype.push != "function")
{
	Array.prototype.push = ArrayPush;
	function ArrayPush(value)
	{
		this[this.length] = value;
	}
}


/* Cypher namespace for constants */

Cypher = 
{
	WINDOW_SIGN_UP: "signUp",
	PARAMETERS_SIGN_UP: "menubar=1,resizable=1,status=1,scrollbars=1,width=650,height=450",
	
	WINDOW_CONTACT_US: "contactUs",
	PARAMETERS_CONTACT_US: "menubar=1,resizable=1,status=1,scrollbars=1,width=760,height=450",
	
	WINDOW_LATEST_NEWS: "latestNews",
	PARAMETERS_LATEST_NEWS: "menubar=1,resizable=1,status=1,scrollbars=1,width=760,height=450",
	
	WINDOW_VIDEO: "video",
	PARAMETERS_VIDEO: "menubar=1,resizable=1,status=1,scrollbars=1,width=686,height=630"
};

/**
	getElementsByClassName
	Written by Jonathan Snook, http://www.snook.ca/jonathan
	Add-ons by Robert Nyman, http://www.robertnyman.com
*/
function getElementsByClassName(oElm, strTagName, strClassName)
{
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++)
	{
		oElement = arrElements[i];
		if(oRegExp.test(oElement.className))
		{
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}

/*
	Allows for multiple calls onLoad. Passed a function to call when that
	event occurs.
*/
function addLoadEvent(func) 
{
	var oldonload = window.onload;
  	if (typeof window.onload != 'function') 
  	{
    	window.onload = func;
  	} 
  	else 
  	{
    	window.onload = function() 
    	{
      		if (oldonload) 
      		{
        		oldonload();
      		}
      		func();
    	}
  	}
}

/* 
	Sets up all our wacky js links.
*/
function prepareLinks()
{
	prepareLink( "signUpLink", Cypher.WINDOW_SIGN_UP, Cypher.PARAMETERS_SIGN_UP );
	prepareLink( "contactUsLink", Cypher.WINDOW_CONTACT_US, Cypher.PARAMETERS_CONTACT_US );
	prepareLink( "latestNewsLink", Cypher.WINDOW_LATEST_NEWS, Cypher.PARAMETERS_LATEST_NEWS );
}

/* 
	Turns a regular link into a wacky javascripty link. 
*/
function prepareLink( className, window, parameters )
{
	var links = getElementsByClassName(document, "a", className);
	for (var i=0; i < links.length; i++)
	{
		var link = links[i];
		link.onclick = function ()
		{
			open( link.href, window, parameters );
			// stop the click from propagation
			return false;
		};
	}
}

function addPrintLink()
{
	// if there's a ul.utility element, the first child should be
	// a new link to print the page.
	var lists = getElementsByClassName(document, "ul", "utility");
	for (var i=0; i < lists.length; i++)
	{
		var list = lists[i];
		list.innerHTML += '<li><a class="printPageLink" href="#" onClick="window.print(); return false;">print page</a></li>'
	}
}

function showVideo(url)
{
	open( url, Cypher.WINDOW_VIDEO, Cypher.PARAMETERS_VIDEO );
}


addLoadEvent( prepareLinks );
addLoadEvent( addPrintLink );