function sortNumber(a,b) {
        return a - b
    }

    col1 = document.getElementById("design_col1");
    col2 = document.getElementById("design_col2");
    col3 = document.getElementById("design_col3");

    if(!document.getElementById("col3_1")) {
	col3.style.display = 'none';
	col3.style.visibility = 'hidden';
        col2.style.width = '735px';
    }

    arr = new Array(col1.offsetHeight,col2.offsetHeight,col3.offsetHeight);
    arr.sort(sortNumber);
    arr.reverse();
    bigH = arr[0];

    col1.style.height = bigH+'px';
    col2.style.height = bigH+'px';
    col3.style.height = bigH+'px';