function subForm( obj_id )
	{
		var obj = document.getElementById(obj_id);
		if( obj ) obj.submit();
	}

	function newwin(url,w,h)
	{
		var window_name = 'myWin_' + Math.round( Math.random()*1000 ) ;
		var myWin = open(url, window_name, 'location=0,menubar=0,toolbar=0,resizable=1,scrollbars=1,width='+w+',height='+h+'');
		if ( myWin ) myWin.focus();
	}

	function showLayer( obj )
	{
		if ( obj )
		{
			obj.style.display = (obj.style.display == 'none') ? '' : 'none';
		}
	}

	function changeOption( targ,selObj )
	{
	     eval(targ + ".location='"+selObj.options[selObj.selectedIndex].value + "'");
	}

	function goTo(link, select)
	{
	     var str = "";
	     if(select.options[select.selectedIndex].value != "")
	     {
	          str += "&" + select.options[select.selectedIndex].value
	     }
	     window.location = link + str;
	}

	function switchVisibility( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById(obj_id);
		if( obj )
		{
			obj.style.display = ( obj.style.display == 'block' ) ? 'none' : 'block';
		}
	}

	function checkMail( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		if( ! obj )
		{
			return false;
		}
		var is_valid_mail = ( /^[A-Za-z0-9\-\_\.]{2,50}@\w+\.?[a-z0-9\-\_]{1,30}\.[a-z]{2,4}$/.test( obj.value ) ) ? true : false;

		return is_valid_mail;
	}

	function subscribe( unsubscribe_action )
	{
		var the_form = $('subscribe_form');
		var elements = Form.getElements(the_form);

		for(var i=0; i<elements.length; i++)
		{
			current_element = elements[i];
			element_value = current_element.value;
			element_value_length = current_element.value.length;
			element_name = current_element.name;
			if( element_value == '' || element_value == value_for_subscribe )
			{
				alert('Заполните поле \'' + current_element.title + '\'.' );
				return;
			}

			if( element_name == 'mail' && ! checkMail('mail') )
			{
				alert( _msg_wrong_mail );
				return;
			}
		}
		var action_to_do = ( unsubscribe_action ) ? 'delete' : 'add';
		Element.update('subscribe_status', loader_img );
		var pars = Form.serialize(the_form);
		var req = new Ajax.Request( 'subscribe_' + action_to_do ,
				{
					method: 'post',
					parameters: pars,
					onComplete: function(req)
					{
						Element.update('subscribe_status');
						req.responseText.evalScripts();
						Form.enable(the_form);
						Form.reset(the_form);
					}
				 } );
		Form.disable(the_form);
	}

	function unsubscribe()
	{
		subscribe(1);
	}

	function empty( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		if( ! obj )
		{
			return false
		}
		var is_empty = false;
		if( obj.value )
		{
			if( obj.value.length < 1 ) is_empty = true;
		}
		else if( obj.innerHTML.length < 1 ) is_empty = true;

		return is_empty;
	}

	function sendContactsForm()
	{
		if( !empty('fio') && !empty('email') && !empty('message') && valueOf('message') != _msg_contacts_message )
		{
			if( checkMail('email') )
			{
				disable('contacts_button');
				subForm('contacts_form');
			}
			else alert( _msg_wrong_mail );
		}
		else alert( _msg_fill_all_fields );
		return false;
	}

	function getObject( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		if( obj )	return obj;
		else return false;
	}

	function valueOf( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		if( obj )
		{
			if( obj.value ) return obj.value;
			else return obj.innerHTML;
		}
		else return false;
	}

	function disable( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		if( obj ) obj.disabled = true;
		else alert( _msg_object_is_absent + "'" + obj_id + "'" );
	}

	function enable( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		if( obj ) obj.disabled = false;
		else alert( _msg_object_is_absent + "'" + obj_id + "'" );
	}

	function startProgress( obj_id, msg )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById(obj_id);
		obj.innerHTML = ( msg ) ? msg : _msg_common_wait ;
		obj.style.display = 'block';
	}

	function stopProgress( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById(obj_id);
		obj.innerHTML = '';
		obj.style.display = 'none';
	}

	function confirmed( msg )
	{
		var _temp_msg = ( msg ) ? msg : _msg_confirm_common;
		return window.confirm( _temp_msg );
	}

	function getImageX(imgElem)
	{
	     var xPos = eval(imgElem).offsetLeft;
	     var tempEl = eval(imgElem).offsetParent;
	     while (tempEl != null)
	     {
	          xPos += tempEl.offsetLeft;
	          tempEl = tempEl.offsetParent;
	     }
	     return xPos;
	}

	function getImageY(imgElem)
	{
	     var xPos = eval(imgElem).offsetTop;
	     var tempEl = eval(imgElem).offsetParent;
	     while (tempEl != null)
	     {
	          xPos += tempEl.offsetTop;
	          tempEl = tempEl.offsetParent;
	     }
	     return xPos;
	}

	function switchMenu( obj_id )
	{
		var obj = (typeof obj_id == 'object') ? obj_id : document.getElementById( obj_id );
		var ch_obj = document.getElementById( 'sub' + obj_id);
		if( obj && ch_obj )
		{
			ch_obj.style.display = ( ch_obj.style.display == 'block' ) ? 'none' : 'block';
			obj.className = ( ch_obj.style.display == 'block' ) ? 'opened' : 'opener';
		}
	}

	function checkSearch()
	{
		var st = $('search_text').value.strip();
		if( st == '' || st == value_for_search.strip() )
		{
			alert('Enter the search keyword, please.');
			return false;
		}
		document.location.href = 'search?text='+ st + '&where=' + $('where').value;
		return true;
	}

	function checkSearchInTab()
	{
		var st = $('tab_search_text').value.strip();
		if( st == '' || st == value_for_search.strip() )
		{
			alert('Enter the search keyword, please.');
			return false;
		}
		document.location.href = 'search?text='+ st + '&where=1';
		return true;
	}

	function setValue( obj_id, obj_init_value, is_blur )
	{
		var obj = document.getElementById(obj_id);
		if( obj )
		{
			if ( obj.value == obj_init_value && !is_blur ) { obj.value = ''; return; }
			if ( obj.value == '' && is_blur) { obj.value = obj_init_value; }
		}
	}

	function sendContactsTabForm()
	{
		if( !empty('email_t') && !empty('message_t') )
		{
			if( checkMail('email_t') )
			{
				disable('contacts_button_t');
				subForm('contacts_form_t');
			}
			else alert( _msg_wrong_mail );
		}
		else alert( _msg_fill_all_fields );
		return false;
	}

	function logIn()
	{
		var the_form = $('loginForm');
		var elements = Form.getElements(the_form);

		for(var i=0; i<elements.length; i++)
		{
			var current_element = elements[i];
			var element_value = current_element.value;
			var element_value_length = current_element.value.length;
			var element_name = current_element.name;
			if( element_value == '' || element_value == current_element.title )
			{
				alert('Заполните поле \'' + current_element.title + '\'.' );
				return false;
			}
		}

		var pars = Form.serialize(the_form);
		var req = new Ajax.Request( 'log-in' ,
				{
					method: 'post',
					parameters: pars,
					onComplete: function(req)
					{
						req.responseText.evalScripts();
						Form.enable(the_form);
					}
				 } );
		Form.disable(the_form);
		return false;
	}

	function logOff()
	{
		the_form = $('loginForm');
		var pars = Form.serialize(the_form);
		var req = new Ajax.Request( 'log-out' ,
				{
					method: 'post',
					parameters: pars,
					onComplete: function(req)
					{
						req.responseText.evalScripts();
					}
				 } );
	}

	function switchLogin()
	{
		var obj = document.getElementById('auth_panel');
		if( obj )
		{
			obj.style.display = ( obj.style.display == 'block' ) ? 'none' : 'block';
			l = document.getElementById('login');
			if( obj.style.display == 'block' && l ){ l.focus() ;}
		}
	}

	function showBigImage(img_source, title)
	{

		var window_name = 'myWin_' + Math.round( Math.random()*1000 ) ;
		var myWin = open('', window_name, 'location=0,menubar=0,toolbar=0,resizable=1,scrollbars=1');
		if ( myWin ) myWin.focus();
		title = ( title ) ? title : _msg_site_name;

		str = '';
		str += '<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"';
		str += '	\"http://www.w3.org/TR/html4/loose.dtd\">';
		str += '<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">';
		str += '<link href=\"./././css/style.css\" rel=\"stylesheet\" type=\"text/css\">';
		str += '<title>'+ title +'</title><style type=\"text/css\">body{ background-image: none;}</style>';
		str += '</head><body>';
		str += '	<div style=\"text-align: center; padding-top: 30px; font-size: 80%;\">';
		str += '	<img src=\"' + img_source + '\">';
		//str += '	<img src=\"' + img_source + '\" alt=\"'+ title +'\" title=\"'+ title +'\" >';
		str += '	<br /><input type=\"button\" class=\"button\" value=\"Close\" onclick=\"self.close();\" /></div>';
		str += '</body></html>';

		myWin.document.write( str );
	}
/*
	function hasEnabledFlashPlugin()
	{
		var has_flash = false;
		for (i=0; i < navigator.plugins.length; i++)
		{
			if (navigator.plugins[i].name.indexOf("Shockwave Flash") != -1)
			{
				has_flash = true;
			}
		}
		return has_flash;
	}

	function showFlash( t_name, t_width, t_height, t_params )
	{
		if( hasEnabledFlashPlugin )
		{
			output_str  = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"';
				output_str += ' codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0"';
				output_str += ' width="' + t_width + '"';
				output_str += ' height="' + t_height + '"';
				output_str += ' id="' + t_name + '">';
				output_str += '<param name="movie" value="upload/iadv/' + t_name + '.swf">';
				output_str += '<param name="quality" value="high">';
				output_str += '<param name="wmode" value="transparent">';
				output_str += '<embed src="upload/iadv/'+ t_name +'.swf"';
					output_str += ' quality="high"';
					output_str += ' pluginspage="http://www.macromedia.com/go/getflashplayer"';
					output_str += ' type="application/x-shockwave-flash"';
					output_str += ' width="' + t_width + '"';
					output_str += ' height="' + t_height + '"';
					output_str += ' wmode="transparent"';
					output_str += ' swLiveConnect="true"';
					output_str += ' name="' + t_name + '">';
				output_str += '</embed>';
			output_str += '</object>';
		}
		else
		{
			output_str = 'No ShockWave Flash Plugin Installed';
		}
		document.write( '\n\t' + '<div id="flash_' + t_name + '" ' + t_params + '>' +  output_str + '</div>' + '\n' );
	}
*/
	function showLocationForPrint()
	{
		document.write( '<br><span>Источник:<\/span>&#160;<span class="url">' + document.location + '<\/span>');
	}