Sir,

a="some text here<img src='tomy.jpg'>some text here"
b="some one here <img src='kozhi.jpg'> some one here"
c="somthing here<img src='rajeev.jpg'>somethingdfsjkdfd"
d="somewhere here <img src='kozhi.jpg'> some where here"

how can i replace all occurance of <img=%> (starting from <img= and end the string with '>') with some other string?
please help....

ram