/* Script Copyright 1998 Lawrence Goetz. */

var slides = new Array();
var place=0;
var stop;
var do_animation=false;

function slide(picture,text,sound,time) {
        this.picture=picture;
        this.text=text;
	  this.sound=sound;
	  this.animation=time;	
}


function display() {
	if(place>0 && place<slides.length) {
	document.slides.slide_number.value=place;
	parent.output.document.open();
	parent.output.document.writeln("<center>");

	if(slides[place].picture!="") {	
		parent.output.document.writeln("<IMG SRC=\""+slides[place].picture+"\"></A> <P><BR>")
	}

	if(slides[place].text!="")
			parent.output.document.writeln("<h2>"+slides[place].text+"</h2>");

	if(slides[place].sound!="") {
			parent.output.document.writeln("<embed src=\""+slides[place].sound+"\" hidden=\"true\" align=\"baseline\" autostart=\"true\" autoplay=\"true\">");
	}


	parent.output.document.writeln("<BR></center>")
	parent.output.document.close();
	if(slides[place].animation && do_animation)
		stop=setTimeout("next()",slides[place].animation*1000)
	}

}

function next() {
	place++;
	if(place>(slides.length-1))
		place=1;
	display();

}


function previous() {
	place--;
	if(place<1)
		place=slides.length-1;
	display();
}

function go_to() {
	place=parseInt(document.slides.slide_number.value);
	place--;
	next();
}

function check() {
	/* Turn off the animation. */
	if(do_animation==true) 
		animation()
}

function animation() {
	if(do_animation==true) {
		do_animation=false;
		document.slides.ani.value="Start Animation";
		clearTimeout(stop);	
	}
	else {
		do_animation=true;
		document.slides.ani.value="Stop Animation";
		next();
	}
}