 
<!-- 
    // last modified script by Bernhard Friedrich; should work in all browsers 
    var a; 
    a=new Date(document.lastModified); 
    lm_year=a.getYear(); 
    if (lm_year<1000){                  //just in case date is delivered with 4 digits 
        if (lm_year<70){ 
        lm_year=2000+lm_year; 
        } 
        else lm_year=1900+lm_year; 
    }                                 //end workaround 
    lm_month=a.getMonth()+1; 
    if (lm_month<10){ 
        lm_month='0'+lm_month; 
    } 
    lm_day=a.getDate(); 
    if (lm_day<10){ 
        lm_day='0'+lm_day; 
    } 
    document.write("Última actualización: " + lm_day+'/'+lm_month+'/'+lm_year); 
// -->