do u want explorer to remember this password?"...

hi frds,in vs2005  website i added one table control is as follows...my problem is when i click login button one explorer message is coming lke "do u want explorer to remember this password?"...how can i avoid this message box?

and same time in text box(txtusername)  when i start typing ,the text box is acting like a list box ...and in that list containg all the username i entered previously...how can i avoid that?
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