link to specific pos in page

Hi, I am building a dynamic thumbnail gallery using php and HTML. All action occurs in the same document, no frames. When you click a thumb the same page reloads and shows a larger version of the thumb. Otherwise the page is identical. I have mainly two problems: *When the page reloads it scrolls to the same positon as before. I do this using named anchors(#). But I would rather do it in a more dynamic way so I don´t need to put anchors on every line of html. Is this possible to achive somehow? *Also when the page reloads the upper part of the page flashes by before it scrolls to position. Is this possible to prevent somehow? I appreciate any help. Thanks. /Johannes