read the values fraom table

Question

i have table like this...

sno   refname    referal code     refmobile  


1        ramu           10253          9012345321
2        raju            305987        9849313820


...


i have 3 textboxes 


when i enter mobile no in 1st textbox  automatically fill referal name in second text box and referal code in third textbox




plz write the code....