HTML
HEADscriptlanguage=\"javascript\"
functiona(){if((document.myform.txt.value==\"username\")elsealert(\"您的用户名或密码错误,请重新输入!\");}functionb(){document.myform.txt1.value=\"\";document.myform.txt.value==\"\";}/script/HEAD
bodybgcolor=\"red\"centerformname=\"myform\"p用户名:inputtype=\"text\"name=\"txt\"value=\"\"p密码:inputtype=\"password\"name=\"txt1\"value=\"\"phrpinputtype=\"button\"value=\"登录\"style=background:blueonclick=\"a()\"inputtype=\"button\"value=\"取消\"style=background:blueonclick=\"b()\"/form/center/body/HTMl