Hi u can better find these answers in google , in the broad way1) Parse the date according u r date format and create a date object.better think of a calendar & make the field read only.2) i didn't get u? do u mean ssl, or <input type="password">3) use navigator object.4) i don't know. drop a message to me if u got it.5) give an id to the cell or row. and get reference and change the innerHTML ex document.getElementById("cellid").innerHTML="new text"thank you ...bye:-)