get the <DIV> tag from webbrowser control

my situation is like this.. i开发者_运维技巧 used a webbrowser control to present a web content in my application.. now i want to modify a div tag(its content width,height & etc.).. so does anyone know how to grab the div from its id.... if it cant be done with webbrowser control please be kind enough to tell me the a possible method...

Call webBrowser.Document.GetElementByID("...").