var current_set=1;
var display_set=1; 
function on_page(display_set)
{
    if (display_set != current_set)
	{
		if (current_set) {
		var block = document.getElementById('page' + current_set);
			block.style.display = "none";
			var page = document.getElementById('p' + current_set);
			page.className = "";
			
		}
		var block = document.getElementById('page' + display_set); 
		block.style.display = "block";
		var page = document.getElementById('p' + display_set);
			page.className = " act";
        
      
        
        current_set = display_set;
       
        if(current_set>1){
        document.getElementById('prev').style.display = "inline";}
        var next_p = current_set+1;
        
        var prev_p = current_set-1; 
        if(!document.getElementById('p' + prev_p)){
        document.getElementById('prev').style.display = "none";}
        
        
        if(!document.getElementById('p' + next_p)){
        document.getElementById('next').style.display = "none"; }
        
        if(document.getElementById('p' + next_p)){document.getElementById('next').style.display = "inline";}
	}
	
	
}

function next_page(){
var next_p = current_set+1; 
 if (document.getElementById('p' + next_p )){
   on_page(current_set + 1);
}

}

function prev_page(){
var prev_p = current_set-1; 
 if (document.getElementById('p' + prev_p)){
   on_page(current_set - 1);
}

}

function on(div){document.getElementById(div).style.display = 'none' ? 'block' : 'none';}

var pol_hidden = true;
function on_poll(){
    var div_button = document.getElementById('poll-result-button');
    var div = document.getElementById('poll-result');
    if(pol_hidden){
            div.style.display = 'block'; 
            div_button.innerHTML ='убрать результаты';
            pol_hidden = false;
}
    else{ 
            div.style.display = 'none'; 
            div_button.innerHTML ='показать результаты';
            pol_hidden = true;}
}



function p(name, w, h)
{
	e = window.open(name, 'popup', 'scrollbars=yes,width=' + w + ',height=' + h);
	if (window.focus) { e.focus(); }
	return false;
}


function pi(img, w, h)
{
	e = window.open('', 'pic', 'scrollbars=no,width=' + w + ',height=' + h);
	if (window.focus) { e.focus(); }

	e.document.open();
	e.document.write('<html><body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">');
	e.document.write('<img id="img" src=' + img + ' width=' + w + ' height=' + h + '><br>');
	e.document.close('</body></html>');

        e.window.resizeTo(100,100);
        e.window.resizeTo(100-(e.document.body.clientWidth-e.document.getElementById("img").width), 100-(e.document.body.clientHeight-e.document.getElementById("img").height));
	return false;

}

function init_slogan(){
var catchword = document.getElementById('catchword');
var min_random = 1;
var max_random = 5;

max_random++;

var range = max_random - min_random;
var n=Math.floor(Math.random()*range) + min_random;
catchword.innerHTML='<img src="/_img/slogan'+n+'.gif">' 
}

function bigimg(url){
var big = document.getElementById('big-img');
big.innerHTML="<div><img src='"+ url +"' alt='' onclick='hide_bigimg()' class='click'/><br/><span onclick='hide_bigimg()' class='click'>Закрыть</span></div>";
big.style.display='inline';
big.style.position='fixed';

}

function hide_bigimg(){
var big = document.getElementById('big-img');
big.style.display='none'
}
