Attaching URL to accordian cell

I want to load an external php/html file into a cell.

path to the script is /template/script/
path to the subwindows is /template/subwindows/ and this is where the file is I want to load.

With this information, how to I load an external file into the accordian cell ‘a1’?

Here is a sample how to atach it:
dhtmlx.com/docs/products/dht … h_url.html
Use the next approach:

dhxAccord.cells("a1").attachURL(../template/subwindows/yourHTML.html);