var who=new Array("intro","pic1","pic2","pic3","pic4","pic5","pic6","pic7");
var where=new Array(1,604,1207,1810,2412,3015,3618,4235);
var current=who[0];
var position=0;
var positionstart=0;
var positionend=0;
var time=0.2;
if((navigator.appName=="Netscape" && parseFloat(navigator.appVersion.substring(navigator.appVersion.indexOf('.')-1,navigator.appVersion.length))>=4)||(navigator.appName=="Microsoft Internet Explorer" && parseFloat(navigator.appVersion.substring(navigator.appVersion.indexOf('.')-1,navigator.appVersion.length))>=4)) var browserokay=true;
if(browserokay){
	intro=new Image(91,33);
	intro.src="images/trans.gif"
	pic1=new Image(91,33);
	pic1.src="images/trans.gif"
	pic2=new Image(91,33);
	pic2.src="images/trans.gif"
	pic3=new Image(91,33);
	pic3.src="images/trans.gif"
	pic4=new Image(91,33);
	pic4.src="images/trans.gif"
	pic5=new Image(91,33);
	pic5.src="images/trans.gif"
		
nav_block=new Image(10,34);
nav_block.src="images/gallery_off.gif"
red_navi=new Image(10,34);
red_navi.src="images/gallery_on.gif"
}
function jump(which){
	if(which!=current&&browserokay){
		startslide(where[seek(current)],where[seek(which)])
		document.images["block"+current].src=nav_block.src;
		document.images["block"+which].src=red_navi.src;
		current=which;
	}
}
function roll(which,way){
	if(browserokay){
		if(way) document.images["answer"].src=eval(which+".src");
		else document.images["answer"].src=eval(current+".src");
	}
}
function startslide(start,end){
	position=0;
	positionstart=start;
	positionend=end;
	slide(positionstart,positionend);
}
function slide(start,end){
	position+=10;
	if(start<end) parent.main.scroll(right(position,start,end),0);
	else parent.main.scroll(left(position,start,end),0);
	if(position<=Math.max(start,end)) setTimeout("slide(positionstart,positionend)",time);
}
function right(position,start,end){return -(end-start)*(Math.pow(position-end,2)/Math.pow(end,2))+end;}
function left(position,start,end){return (start-end)*(Math.pow(position-start,2)/Math.pow(start,2))+end-2;} 
function seek(part){
	var distance=who.length;
	for(var loop=0;loop<distance;++loop) if(who[loop]==part) break;
	return loop;
}