function showtab1(i)
       {
         if (i==1){                  
          document.all("dlCgAl").style.display='';
		  document.all("dlGsCp").style.display='none';
		  document.all("tab1_1").className = "tab_focus";
		  document.all("tab1_2").className = "tab_blur";
          }
         if (i==2) {
          document.all("dlCgAl").style.display='none';
		  document.all("dlGsCp").style.display='';
		  document.all("tab1_1").className = "tab_blur";
		  document.all("tab1_2").className = "tab_focus";
          }
	 }