function goto(mmain) {
  
  // alert(mmain);
  if (mmain==1) { window.open("http://www.dahhsin.com.tw/","_blank"); }
  if (mmain==2) { window.open("http://www.tj-ebook.com/index.php","_blank"); } 
  if (mmain==3) { window.open("http://www.notonlybook.com/","_blank"); } 
  if (mmain==4) { window.open("http://mppen.com/","_blank"); } 
  if (mmain==5) { window.open("http://www.2smiles.com/","_blank"); } 
  if (mmain==6) { window.open("http://www.moresticker.com","_blank"); } 
    
}