This is an example of page with Iframe, where the link to the page that must be displyed in the frame is passed to the page through the GET method. The link in your browser is:
http://www.dbtechnosystems.com/Tips/path_frame.php?path=search.har.com/idx/dosearch.cfm?offset=0&TID=3&siteType=AWS&CID=240440&FLAG=1&ALLMLS=Y&FOR_SALE=1&SUBMIT=Search&subdivision=april
Replacing the part in RED with any domain name (with or without further parameters) will result in displying the specific site in the frame.
Test it! If you wish to have the BV file of this page, simply click here.