var firstIS_NEW = -1;
    var firstON_SALE = -1;
    var firstIS_BEST_SELLER = -1;

    var ON_SALE;
    var ON_SALE_ITEMS_STRING;
    var objON_SALE;
    
    var IS_BEST_SELLER;
    var IS_BEST_SELLER_ITEMS_STRING;
    var objIS_BEST_SELLER;
    
    var IS_NEW;
    var IS_NEW_ITEMS_STRING;
    var objIS_NEW;


        document.write('<table>');
        
        
                DisplayProduct('ON_SALE');
            
                DisplayProduct('IS_NEW');
            
                DisplayProduct('IS_BEST_SELLER');
            
        
        document.write('</table>');
        ModuleValidation();
        
        
            DisplayModules('ON_SALE');
          
            DisplayModules('IS_NEW');
          
            DisplayModules('IS_BEST_SELLER');
          

function DisplayRandomItems(filter)
{

    if(filter == 'ON_SALE')
    {
        ON_SALE_ITEMS_STRING = '1828,1844,1847,284,1350,1781,246,1843,1846,1787,1818,277,1835,1845,1848,1826,545';
        ON_SALE = ON_SALE_ITEMS_STRING.split(',');
    }
    else if(filter == 'IS_BEST_SELLER')
    {
        IS_BEST_SELLER_ITEMS_STRING = '395,1828,277,284,1847,1849,1848,1843,246,631,1845,1844,746,739,1846,751';
        IS_BEST_SELLER = IS_BEST_SELLER_ITEMS_STRING.split(',');
    }
    else if(filter == 'IS_NEW')
    {
        IS_NEW_ITEMS_STRING = '1826,1849,1828,1845,1846,1818,1844,1835,1781,1847,1843,1848';
        IS_NEW = IS_NEW_ITEMS_STRING.split(',');
    }
}




function DisplayProduct(filter)
{
    if(filter == 'ON_SALE')
    {
        document.write('<tr><td><span id="txtON_SALE"></span></td></tr>');
        DisplayRandomItems('ON_SALE');
        objON_SALE = new AjaxProduct('ON_SALE');
        firstON_SALE = objON_SALE.GetFirstProduct(); //Get first record")
    }
    else if(filter == 'IS_BEST_SELLER')
    {
        document.write('<tr><td><span id="txtIS_BEST_SELLER"></span></td></tr>');
        DisplayRandomItems('IS_BEST_SELLER');
        objIS_BEST_SELLER = new AjaxProduct('IS_BEST_SELLER');
        firstIS_BEST_SELLER = objIS_BEST_SELLER.GetFirstProduct(); //Get first record")
    }
    else if(filter == 'IS_NEW')
    {
        document.write('<tr><td><span id="txtIS_NEW"></span></td></tr>');
        DisplayRandomItems('IS_NEW');
        objIS_NEW = new AjaxProduct('IS_NEW');
        firstIS_NEW = objIS_NEW.GetFirstProduct(); //Get first record")
    }
}

function DisplayModules(filter)
{    
    if(filter == 'ON_SALE')
    {
        objON_SALE.DisplayFirstProduct();
    }
    else if(filter == 'IS_BEST_SELLER')
    {
        objIS_BEST_SELLER.DisplayFirstProduct();
    }
    else if(filter == 'IS_NEW')
    {
        objIS_NEW.DisplayFirstProduct();
    }
}

function ModuleValidation()
{
    if (firstON_SALE != -1)
    {
        if (firstON_SALE == firstIS_NEW)
        {
            objON_SALE.MoveNextProduct();
            firstON_SALE = objON_SALE.GetCurrentProduct();
        }
    }
    
    if (firstIS_BEST_SELLER != -1)
    {
        if (firstIS_BEST_SELLER == firstON_SALE || firstIS_BEST_SELLER == firstIS_NEW)
        {
            objIS_BEST_SELLER.MoveNextProduct();
            firstIS_BEST_SELLER = objIS_BEST_SELLER.GetCurrentProduct();
            
            if (firstIS_BEST_SELLER == firstON_SALE || firstIS_BEST_SELLER == firstIS_NEW)
            {
                objIS_BEST_SELLER.MoveNextProduct();
                firstIS_BEST_SELLER = objIS_BEST_SELLER.GetCurrentProduct();
            }
        }
    }
}