billedIndex = new Array();
headerIndex = new Array();
textIndex = new Array();

number = 0;
tekst2 = "";
tekst1 = "";

function lineBreak(repl_char1, field1, repl_char2, field2)
{
		
	char_ud = "<br>";
	char_ind = "\n";
	tekst1 = "" + repl_char1;
	tekst2 = "" + repl_char2;
		
	while (tekst1.indexOf(char_ud)>-1)
	{
		pos = tekst1.indexOf(char_ud);
		tekst1 = "" + (tekst1.substring(0, pos) + char_ind + tekst1.substring((pos + char_ud.length), tekst1.length));
	}
	while (tekst2.indexOf(char_ud)>-1)
	{
		pos = tekst2.indexOf(char_ud);
		tekst2 = "" + (tekst2.substring(0, pos) + char_ind + tekst2.substring((pos + char_ud.length), tekst2.length));
	}
	document.chr[field1].value = tekst1;
	document.chr[field2].value = tekst2;
}

function fwd()
{
	if(!(number > billedIndex.length-3))
	{
		document.images.img1.src = katalog+"/"+billedIndex[number+2];
		document.images.img2.src = katalog+"/"+billedIndex[number+3];
		
		document.chr.header1.value = headerIndex[number+2];
		document.chr.header2.value = headerIndex[number+3];
		
		document.chr.text1.value = textIndex[number+2];
		document.chr.text2.value = textIndex[number+3];
		
		number = number + 2;
	}
		lineBreak(document.chr.text1.value,'text1',document.chr.text2.value,'text2');
	
	document.nummer.nummer1.value = number+1;
	
	if(!(number > billedIndex.length-2)){
		document.nummer.nummer2.value = number+2;
	}
	else{
		document.nummer.nummer2.value = "";
	}
	//alert("nr " + number + "\n" + "bI " + (billedIndex.length-3));
	
	if((number == billedIndex.length-1))
	{
		document.images.img2.src = "/christas.gif";
		document.chr.header2.value = "";
		document.chr.text2.value = "";
	}
}

function rew(){
	if(!(number == 0)){
		document.images.img1.src = katalog+"/"+billedIndex[number-2];
		document.images.img2.src = katalog+"/"+billedIndex[number-1];
		
		document.chr.header1.value = headerIndex[number-2];
		document.chr.header2.value = headerIndex[number-1];
		
		document.chr.text1.value = textIndex[number-2];
		document.chr.text2.value = textIndex[number-1];
				
		number = number - 2;
	}
	document.nummer.nummer1.value = number+1;
	document.nummer.nummer2.value = number+2;
	
	lineBreak(document.chr.text1.value,'text1',document.chr.text2.value,'text2');
}

function nav(){
	if(!(number == 0)){
		document.all.forrige1.style.visibility = 'visible';
		document.all.forrige2.style.visibility = 'visible';
	}
	else{
		document.all.forrige1.style.visibility = 'hidden';
		document.all.forrige2.style.visibility = 'hidden';
	}
	
	if((number > billedIndex.length-3)){
		document.all.next1.style.visibility = 'hidden';
	}
	else if(!(number > billedIndex.length-3)){
		document.all.next1.style.visibility = 'visible';
	}
}

function setSize(){
	document.all.text1.style.height = 75;
	document.all.text2.style.height = 75;
	document.all.header1.style.width = 245;
	document.all.header2.style.width = 245;
}