var bIsNet = navigator.appName == "Netscape" ;
 var bIsNet4 = bIsNet && navigator.appVersion.indexOf("4.") > -1 ;
 if (bIsNet4) { 
 sCSS = '<LINK REL="stylesheet" TYPE="text/css" HREF="img_indx_style.css">';
document.write(sCSS) 
  			}


  else {
    sCSS = "null"
    }