// construct Flash object and embed tags
// FlashVars should be a string of name/value pairs separated by ampersands

	function get_flash_tags(filename, width, height, bgcolor, flashvars) {
		name = filename;
		if (name.indexOf("/")) { name = name.substring(name.lastIndexOf("/") + 1); }
		if (name.indexOf(".")) { name = name.substring(0, name.indexOf(".")); }
		
		output = '<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"';
		output += ' codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"';
		output += ' WIDTH="' + String(width) + '" HEIGHT="' + String(height) + '" id="' + name + '" name="' + name + '" ALIGN="">';
		output += '<PARAM NAME=movie VALUE="' + filename + '"> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=' + bgcolor + '> <EMBED src="' + filename + '" quality=high bgcolor=' + bgcolor + ' WIDTH="' + String(width) + '" HEIGHT="' + String(height) + '" NAME="' + name + '" ALIGN=""';
		output += ' TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer" swLiveConnect="true"';
		output += ' FlashVars="' + flashvars + '"></EMBED>';
		output += '<PARAM NAME="FlashVars" VALUE="' + flashvars + '">';
		output += '</OBJECT>';
		return output;
	}
	

// decide whether we've been flattened or not

	function is_flattened() {
		return ((location.href.indexOf("flattened") != -1)&&(location.href.indexOf(".html") != -1));
	}


// return a path to a page, given a page name, in either a flattened or unflattened format
// change script_extension depending on what version of Contemplate we're using

	function format_page_name(page_name) {
		script_extension = "asp";
		if (is_flattened()) {
			page_name_formatted = "../flattened/" + page_name + ".html";
		} else {
			page_name_formatted = "../contemplate/assembler." + script_extension + "?page=" + page_name;
		}
		return page_name_formatted;
	}
			

// gets the name of the current page, even if we're rewriting URLs

	function get_page_name() {
		if (location.href.indexOf("page=") != -1) {
			page_name = location.href.substring(location.href.indexOf('page=') + 5, location.href.length);
		} else {
			page_name = location.href.substring(location.href.lastIndexOf('/') + 1, location.href.indexOf('.htm'));
		}
		return page_name;
	}
	

// open a popup window, specifying source, width, and height, and optionally a name; if no name, choose a random one

	function popup(source,width,height,window_name) {
		if (! window_name) { 
			now = new Date()
			window_name = now.getTime()
		} else {
			window_name = window_name.replace(/ /g, "_");
		}
		popup_window = window.open(source,window_name,"width="+String(width)+",height="+String(height)+",location=no,menubar=no,directories=no,toolbar=no,scrollbars=no,resizable=no,status=yes");
		popup_window.focus()
	}


// popup window with same width and height across all browsers
	function popup_same_size(source,width,height,window_name) {
		if (navigator.appVersion.indexOf("Mac")!=-1) {
			// Mac IE : Mac other
			resize_height = (document.all) ? 10 : 30;
			resize_width = (document.all) ? 15 : 14;
		} else {
			if (document.layers) {
				// Netscape 4
				resize_height = 0;
				resize_width = 0;
			} else {
				// Netscape 6+ : IE
				resize_height = (navigator.userAgent.indexOf("Netscape")!=-1) ? 15 : 15;
				resize_width = (navigator.userAgent.indexOf("Netscape")!=-1) ? 16 : 13;
			}
		}
		new_width = width + resize_width;
		new_height = height + resize_height;
		popup(source,new_width,new_height,window_name);
	}
	

// the simplest possible rollover function

	function swap(name, state) {
		eval('document.images.' + name + '.src = ' + name + '_' + String(state) + '.src');
	}	


// write a block of code that preloads a list of graphics
// - this version makes on and off states and is most often used for button rollovers

// names - a comma-delimited list of button names (e.g. "home,about,contact")
// path - the path to the graphics; defaults to "../graphics" if not set (e.g. "../graphics/menus/home")
// extension - the file extension of the graphics files; defaults to "gif" if not set (e.g. "jpg")

	function preload_buttons(names, path, extension) {
		names = names.split(",");
		path = (path) ? path : "../graphics" ;
		extension = (extension) ? extension : "gif" ;
		for (n=0; n < names.length; n++) {
			this_name = names[n];
			this_path = path + "/" + this_name;
			eval(this_name + "_0 = new Image()");
			eval(this_name + "_0.src = '" + this_path + "_0." + extension + "'");
			eval(this_name + "_1 = new Image()");
			eval(this_name + "_1.src = '" + this_path + "_1." + extension + "'");
		}
	}
	

// figure out whether a variable has been set or not without generating an undefined error if it hasn't

	function isset(variable) {
		eval("result = (typeof(" + variable + ") != 'undefined')");
		return result;
	}
	

// returns the index of an array element, something that ought to be built into JavaScript but isn't!
// returns -1 if not present

	function get_position(string, array) {
		for (n=0; n < array.length; n++) {
			if (array[n] == string) {
				return n;
				break;
			}
		}
		return -1;
	}


// show or hid a div
	function show_hide_div(id,show_div) {
		if (show_div == "1") {
			if (document.layers) 
				document.layers[''+id+''].visibility = "show"
			else if (document.all) 
				document.all[''+id+''].style.visibility = "visible"
			else if (document.getElementById) 
				document.getElementById(''+id+'').style.visibility = "visible"
		} else if (show_div == "0"){
			if (document.layers) 
				document.layers[''+id+''].visibility = "hide"
			else if (document.all) 
				document.all[''+id+''].style.visibility = "hidden"
			else if (document.getElementById) 
				document.getElementById(''+id+'').style.visibility = "hidden"
		}
	}
	
// navigate to the next page in this section of the page definitions file

	function navigate_next() {
		top.location = format_page_name(page_next);
	}

// navigate to the previous page in this section of the page definitions file

	function navigate_previous() {
		top.location = format_page_name(page_previous);
	}

// navigate to the previous page in this section of the page definitions file

	function navigate_start() {
		top.location = format_page_name(page_start);
	}		
	
// this is handy for preventing the Return key from submitting forms (set form action to "JavaScript:nothing()")
	
	function nothing() {}