function redirect(url) {
    document.location = url;
  }

  function preloadpic() {
      
    timgmenu1 = new Image(); timgmenu1.src = "images/menu01b.jpg";
    timgmenu2 = new Image(); timgmenu2.src = "images/menu02b.jpg";
    timgmenu3 = new Image(); timgmenu3.src = "images/menu03b.jpg";
    timgmenu4 = new Image(); timgmenu4.src = "images/menu04b.jpg";
    timgmenu5 = new Image(); timgmenu5.src = "images/menu05b.jpg";
    timgmenu6 = new Image(); timgmenu6.src = "images/menu06b.jpg";  
    timgmenu7 = new Image(); timgmenu7.src = "images/menu07b.jpg";     
    
    timgprod1 = new Image(); timgprod1.src = "images/producttab_menu1b.jpg";     
    timgprod2 = new Image(); timgprod2.src = "images/producttab_menu2b.jpg";     
    timgprod3 = new Image(); timgprod3.src = "images/producttab_menu3b.jpg";     
    timgprod4 = new Image(); timgprod4.src = "images/producttab_menu4b.jpg";     
    timgprod5 = new Image(); timgprod5.src = "images/producttab_menu5b.jpg";     
    timgprod6 = new Image(); timgprod6.src = "images/producttab_menu6b.jpg";     
    timgprod7 = new Image(); timgprod7.src = "images/producttab_menu7b.jpg";     
    
    timgcart1 = new Image(); timgcart1.src = "images/addtocart_btnaddb.jpg";     
    
    timghbtn1 = new Image(); timghbtn1.src = "images/header_btn1b.jpg";     
    timghbtn2 = new Image(); timghbtn2.src = "images/header_btn2b.jpg";     
    timghbtn3 = new Image(); timghbtn3.src = "images/header_btn3b.jpg";     
    
    timghome1 = new Image(); timghome1.src = "images/home_btn1b.jpg";     
    timghome2 = new Image(); timghome2.src = "images/home_btn2b.jpg";     
    timghome3 = new Image(); timghome3.src = "images/home_btn3b.jpg";     
    
    timgnews1 = new Image(); timgnews1.src = "images/news_btn1b.jpg";
    timgnews2 = new Image(); timgnews2.src = "images/news_btn2b.jpg";
    
    timgcont1 = new Image(); timgcont1.src = "images/contact_btn1b.jpg";     
    timgcont2 = new Image(); timgcont2.src = "images/contact_btn2b.jpg";     
    timgcont3 = new Image(); timgcont3.src = "images/contact_btn3b.jpg";   
    
    timgcheckout1 = new Image(); timgcheckout1.src = "images/checkout_btn1b.jpg";       
    timgcheckout2 = new Image(); timgcheckout2.src = "images/checkout_btn2b.jpg";       
    
  }
  
  function isNumericKey(e) {
    var k = document.all ? e.keyCode : e.which;
    return ((k > 47 && k < 58) || k == 8 || k == 0);
  }

  function extractNumeric(str) {
    return str.replace(/\D/g,"");
  }