I found few things which I am sharing here -

Counting the number of anchors, forms, images and link in a document –

selenium.getEval("window.document.anchors.length;");

selenium.getEval("window.document.forms.length;");

selenium.getEval("window.document.images.length;");

selenium.getEval("window.document.links.length;");

This way we can tests if there are right number of anchors, forms, images and links in a page.

Finding the element position using the methods from DefaultSelenium class –

getElementHeight(java.lang.String locator)

      getElementPositionLeft(java.lang.String locator)

      getElementPositionTop(java.lang.String locator)

      getElementWidth(java.lang.String locator)

Please share if you there are more ideas on this.

~ Tarun K