function obj_ajax() 
{
	try 
	{                 
		 xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch (e) 
	{                 
		try 
		{                          
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (E) 
		{                           
			 xmlhttp = false;
		}
    }
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') 
	{                 
 		xmlhttp = new XMLHttpRequest(); 
	}
  	return xmlhttp
}

function add2session( id , id_checkbox )
{
	_obj_ajax = obj_ajax();   

	URL = "js.php?id=" + id;
	
	_obj_ajax.open( "GET" , URL , true );   
	 
	_obj_ajax.onreadystatechange=function() 
	{                 
		if (_obj_ajax.readyState==4) 
		{	
			if(_obj_ajax.status==200)
			{  
			  	// 200 inseamna ca a temrinat de executat
				if ( _obj_ajax.responseText == '333' )
				{
					document.getElementById( id_checkbox ).checked = false;
					alert( 'Puteti selecta maxim 10 oferte !' );
				}
				else
				{
					// e bine
				}
			}
		}
	}  
 	_obj_ajax.send( null ); 
}

function check( n )
{
	
	for ( var i = 0; i < n ; i++ )
	{
		var element = document.getElementById( 'compara' + i );
		for ( var j = 0; j <= session_ids.length ; j++ )
		{
			if ( session_ids[j] == element.value )
			{
				element.checked = true;
			}
		}
	}
}