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 function sub01(){ 
  location.href="01_company/sub_01.asp"; 
 }
 function sub2(){ 
  location.href="02_product/sub_01.asp"; 
 }
 function sub3(){ 
  location.href="03_business/sub_01.asp"; 
 }
 function sub4(){ 
  location.href="04_equipment/sub_01.asp"; 
 }
 function sub5(){ 
  location.href="05_customer/sub_01.asp"; 
 }
 function sub6(){ 
  location.href="06_sitemap/sub_01.asp"; 
 }