function toggle_text(){
		text_over = document.getElementById("text_overlay");
		text_l = document.getElementById("text_link");
		if (text_l.innerHTML == "ausblenden / hide"){
			text_over.style.height = 25 + "px";
			text_l.innerHTML = "einblenden / show";	
		}	
		else{
			text_over.style.height = "auto";
			text_l.innerHTML = "ausblenden / hide";	
		}
	}

function scroll_impressionen(dir){
	var px = 1;//mehr=schneller
	if (document.getElementById("pics")) { 
		var pics_div = document.getElementById("pics");
		var scroll = pics_div.scrollLeft;		
		if ( scroll >= pics_div.scrollWidth-pics_div.offsetWidth){
				dir = 2;
		}
		if (pics_div.scrollLeft < 1){
			dir = 1;
		}
		if (dir == 1){
			scroll += px;
			pics_div.scrollLeft = scroll;
			setTimeout('scroll_impressionen('+dir+')',50);
		}
		else{
			scroll -= px;
			pics_div.scrollLeft = scroll;
			setTimeout('scroll_impressionen('+dir+')',50);
		}
	}
	else{
		setTimeout("scroll_impressionen(1)",1000);
	}	
}

function change_background(img, page){
	var box_path = "img/picbox/" + page + "/";
	var back_path = "img/back/" + page + "/";
	var back_div = document.getElementById("main");		
	var back_div_img = document.getElementById('main').style.backgroundImage.replace(/\"/g, '').slice(4, -1);
	var box_img = img.src;	
	box_img = box_img.replace(/\"/g, '');
		
	box_img = box_img.replace('http://' + window.location.host + '/img/picbox/' + page + '/', '');
	back_div_img = back_div_img.replace('../img/back/' + page + '/', '');	
	
	img.src = "../" + box_path + back_div_img;
	back_div.style.backgroundImage = "url(../" + back_path + box_img + ")";
	
}