Hi Swaroop,
Yes, the functionality would be the same in either case but you do not have the freedom of customizing the function in case of browser's 'Print' option. :-)
Alright, but since you are using a button for the same which inturn calls a js function, here is what I could think of.
I thought if you can fix the size of all the applets with proper <br> to fit in as per the page layout for printing, but that would distort the UI if the screen is viewed in different size Monitor/Laptop since the applet sizes will not be in %.
Way out here I could think of is, if you can create a pdf and then print it on click of the same button, using all the parameter values same as you would have used for populating your UI, wherein you can scale the width and height of each and every applet and the corresponding headers to fit as per the page breaks of your pdf.
Hope this adds a pointer to resolve your issue.
Best Regards,
Anuj