Two tables and a "trashcan". Rows can be dragged and dropped within tables, from one table to another, or on the trashcan. This para has also been set to be draggable, but no drop targets will do anything with it!

Table 1, Row 1
Table 1, Row 2
Table 1, Row 3
Table 1, Row 4
Table 1, Row 5
Table 1, Row 6
    
Table 2, Row 1
Table 2, Row 2
Table 2, Row 3
Table 2, Row 4
Table 2, Row 5
Table 2, Row 6

This para serves as the trashcan! Put image of a trash can here, and replace the P tag with IMG. Java code would also have to be changed to replace HtmlPara with HtmlImage.