function showsite(par1,par2,par3)
  {
  	
    for(i=1;i<7;i++)
	{ 
	  str0="document.all.site"+i+".style.visibility='hidden'";       	
	  eval(str0);	
    }
	 for(i=10;i<18;i++)
	{ 
	  str0="document.all.site"+i+".style.visibility='hidden'";       	
	  eval(str0);	
    }
	
	if (par1 != 100)
	   {
	     str="document.all('site"+par1+"').style.visibility='visible'";       	
	     eval(str);
		 str1="document.all('site"+par2+"').style.visibility='visible'";       	
	     eval(str1);
		 str1="document.all('site"+par3+"').style.visibility='visible'";       	
	     eval(str1);
	   }	 
		 
  }