function manageVisibilityBlock(){
	//content ID, image ID
	var content_obj = null;
	var img_obj = null;	
	if( arguments[0] && arguments[0].length > 1 ){ content_obj = document.getElementById(arguments[0]); }
	if( arguments[1] && arguments[1].length > 1 ){ img_obj = document.getElementById(arguments[1]); }
	try{
		if(content_obj.style.display == ""){ content_obj.style.display = 'none'; }
		if(content_obj.style.display == 'none'){
			content_obj.style.display = 'block';
			img_obj.src = 'images/arrow_down.gif';
		}else{
			content_obj.style.display = 'none';
			img_obj.src = 'images/arrow_right.gif';
		}
	}catch(ex){};
	return true;
	//ts_content.style.display = (ts_content.style.display=='none') ? 'block' : 'none'; 
}
function manageShare(){
	return;
}

/* menu managment section */
var subMenus = new Array();
var t;
var opac = 0; //default opacity;
function makeSubArrays(objID){
	if(subMenus.length == 0){ subMenus.push(objID); }
	for(var i=0; i<subMenus.length; i++){
		if(subMenus[i] == objID){
			break;
		}else{
			subMenus.push(objID);
			break;
		}
	}
	return;
}
function submenuMan(stat,objID, base){
	base.onmouseout = function(){
		return hideTimeOut();
	}
	clearTimeout(t);
	for(var d=0; d<subMenus.length; d++){ 
		try{
			if(objID != subMenus[d]){ document.getElementById(subMenus[d]).style.display='none'; }
		}catch(ex){}; 
	}
	var sm = document.getElementById(objID);
	if(stat==1){
		fadeIn(0,objID);
		sm.style.display='block';
	}else{
		
	}
	return; 
}

function fadeIn(opac,objID) {
	var sm = document.getElementById(objID);
	if(opac < 85){
		opac+=3;
		//try{
			//sm.filters.alpha.opacity = opac;
		//}catch(ex){
			//sm.style.filter='progid:DXImageTransform.Microsoft.Alpha(Opacity=' + opac + ')';
			//sm.style.filter = 'alpha(opacity=' + opac + ')';
		//}
		try{
			sm.style.MozOpacity = opac/100;
		}catch(ex){
			sm.style.filter = 'alpha(opacity=' + opac + ')';
		}
		/*
		try{
			try{ms.style.filter='alpha(opacity='+opac+')';}catch(ex){}
			try{ms.style.MozOpacity=opac/100;}catch(ex){}
			try{ms.style.KhtmlOpacity=opac/100;}catch(ex){}
			try{ms.filters.alpha.opacity=opac;}catch(ex){}
		}catch(ex){}
		*/
		setTimeout('fadeIn('+opac+',\''+objID+'\')', 2);
	} return;
}
function hideTimeOut(){
	t = setTimeout("hideAll()",100);
	return;
}
function stopHide(){
	clearTimeout(t);
	return;
}
function hideAll(){
	for(var a=0; a<subMenus.length; a++){
		try{ document.getElementById(subMenus[a]).style.display='none'; }catch(ex){}
	} return;
};

/* menu management section */

/* manage show/hide global blocks */
function mapShowHide(mid){
        if(document.getElementById(mid))
        {
            if(document.getElementById(mid).style.display == 'block')
            {
                document.getElementById(mid).style.display = 'none';
            }
            else{
                document.getElementById(mid).style.display = 'block';
                }
        }
    }
function changeMainImage(){
	try{    
		var listovki_box = document.getElementById('listovki_box');
		if(listovki_box){
			var imgDir = 'images/lists/';
			var imgs = ['list1.jpg','list2.jpg','list3.jpg'];
			var ry=Math.floor(Math.random()*(imgs.length));
			try{ listovki_box.style.backgroundImage="url(\'"+imgDir+""+imgs[ry]+"\')"; } catch(ex){ }
		}
	}catch(ex){};
}


function getDids(){
	var ajaxRequest; 	
	try{ajaxRequest = new XMLHttpRequest();} catch (e){
		// Internet Explorer Browsers
		try{ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");} catch (e) {
			try{ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");} catch (e){
				alert("Your browser broke!");
				return false;
			}
		}
	}
	// Create a function that will receive data sent from the server
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var ajaxDisplay = document.getElementById('did-you-know');
			ajaxDisplay.innerHTML = '<div class="title_orange">Знаете ли че:</div>\n<pre>' + ajaxRequest.responseText + '</pre>';
		setTimeout("getDids()",15000);
		}
	}
	ajaxRequest.open("GET", "/proxy/did-you-know.pl", true);
	ajaxRequest.send(null); 
}