var odkud = 0;
var pokud = 0;
var i = 0;
var x = 1;
var krok = 0;

//Browser version
var ns4 = (document.layers)? true:false

window.onerror = GetOutFromScript;

function PicRefresh(picname){
	
	if (ns4){
		
		obrazek = "JPG"+picname;
		now = new Date();
		JpgSrc=eval("NEWJPG"+picname+".src");
		window.document["JPG"+picname].src = JpgSrc+"?"+now.getTime();
	}
}

function GetOutFromScript(){

	return true;
}

function roll(odkud,pokud,picname) {
	krok = 8;
	i = odkud;
		while (i < pokud) {
		scroll(i,0);
		i += krok;
		}
		scroll(pokud,0);
		x = pokud;
		if (picname){
			PicRefresh(picname);
		}
}

function rollBack(odkud,pokud,picname) {
	krok = -10;
	i = odkud;
		while (i > pokud) {
		scroll(i,0);
		i += krok;
		}
		scroll(pokud,0);
		x = pokud;
		if (picname){
			PicRefresh(picname);
		}
}