Required library edition:
Required library file: dhtmlxcontainer.js

attaches string to an item

Attaching to the layout's cell:

    dhxLayout.cells("a").attachHTMLString(htmlString);

Attaching to the accordion's cell:

    dhxAcc.cells(id).attachHTMLString(htmlString);

Attaching to a window:

    dhxWins.window(id).attachHTMLString(htmlString);

Attaching to a tab:

    dhxTabbar.cells(tabId).attachHTMLString(htmlString);