[COLUMN1_START]<div style="float: left; width: [COLUMN1_WIDTH]%;"> column 1 content</div>[COLUMN1_END]

[COLUMN2_START]<div style="float: left; width: [COLUMN2_WIDTH]%;"> column 2 content</div>[COLUMN2_END]

[COLUMN3_START]<div style="float: left; width: [COLUMN3_WIDTH]%;"> column 3 content</div>[COLUMN3_END]

<div style="clear: both;"></div>