I am having a bit of trouble with getting pop up windows

www.grotec.com.au/p3dummy.htm


the problem I am having is the annoying factor that when you click on the thumbnails at the bottom of the page it sends that page back to the top leaving the user to have to scroll back down again & again...the pop up browser itself is no worries...

I have not had any luck with javascript in the past...I use dreamweaver 3 to add all the behaviours I need...I am still a bit of a novice tho I'm starting to become a bit more familiar with the HTML architecture as such...

I am ready to learn if someone can help me with getting the right script...and where exactly I am to paste it...

Thanks heaps
jase