Open a new web browser window without back button

Using javascript we can do that easily.

window.open(url,window title,"status=1,toolbar=0");

There are more options that you can use while writing a javascript to open a new window

status	The status bar at the bottom of the window.
toolbar	The standard browser toolbar, with buttons such as Back and Forward.
location	The Location entry field where you enter the URL.
menubar	The menu bar of the window
directories	The standard browser directory buttons, such as What's New and What's Cool
resizable	Allow/Disallow the user to resize the window.
scrollbars	Enable the scrollbars if the document is bigger than the window
height	Specifies the height of the window in pixels. (example: height='350')
width	Specifies the width of the window in pixels.