Loading results into an iframe

I'm trying desperately to get this project done and I could use some help. I am using an external mapping tool on a site that I am doing. The site visitor would input their address or zip code and select distance. They would be presented with a store location near them. When they click on that link, it would take them to that store's specific page. In each store's specific page, I have the following javascript in the header:

var tS=window.location.search.split("&");
var tSearch=tS[0].split("=")[1];
var tSource=tS[1].split("=")[1];

function loadMap()
{
window.location="http://externalsite.com/ctc2.jsp?rds=yes&search="+tSearch+"&source="+tSource;
}

I then have a link on that page for map & directions which uses the following code:

javascript:loadMap();

This is working well as far as functionality goes, but the link actually goes to the external site and I need it to load in an iframe or similar, so it looks like the rest of the site.

Any help would be greatly appreciated.

Try onclick="loadMap();", and if you want to load an iframe, you'll reset the .src property of the iframe instead of trying to reload the window and lose your script.

Thanks for the tip fside. I guess that is where I am lost. How to I load the results into an iFrame?

The "src" property, already mentioned.

If you use a generic - object - I believe that can load a webpage using the "data" property. But I think the iframe will be more accessible.