bname=navigator.appName

// If the platform is Macintosh.
               if (navigator.platform.indexOf('Mac') != -1) 
			   
			   
			   //If browser is IE
			   {if (bname.indexOf("Microsoft")!=-1)
			   {
			   document.write('<LINK REL="stylesheet" HREF="/css/mac_ie.css">');
			   }
			   //else 
              else
			  {
			   document.write('<LINK REL="stylesheet" HREF="/css/mac_ns.css">');
			  }
			  
			  
			  
			  
               // Otherwise, use the Windows style sheet.
               }
			   

			   
			   
			   
			    else{
				//If browser is IE
				if (bname.indexOf("Microsoft")!=-1)
				{
				document.write('<LINK REL="stylesheet" HREF="/css/pc_ie.css">');
				}
				 //else 
				else
				{
				 document.write('<LINK REL="stylesheet" HREF="/css/pc_ns.css">');
				}
      
               }