IE=navigator.appName=="Netscape" && !document.getElementById?false:true;

function wind_file(url_file) {
        if (IE) {
        	win=window.open(url_file,'_blank','width=450,height=400,resizable=yes,scrollbars=1,top=50,left=50');
        	}
        else {
  win=window.open(url_file,'_blank','width=300,height=400,resizable=yes,top=50,left=10');
             }
          				}