Seeing <BR><BR> in input box

Dear all I had made a page for edit which contains Input box, but the Input box is not blank, i had used the php script to make the input box use the last input text as the default value. The problem comes out like this, when i input the text into the input box on the first time, it just works fine (it copy my heading to a file called "Heading.txt" and the content to a file called "Content.txt", then when i click a link , the heading and the context from these file will be display nicely.), but when i go back to the page for edit on sec time, i can see there is a lot of <BR> in the input box, as much time i submit to the input box, the more <BR> will come out and display in the box. So is there anyway that i can skip the <BR> appear in my input box??? The input box is actually read the content from the heading and content.txt file. Thx Jack jack@nedcor.com