var vx_div_clr =
document.getElementById("vx_maincolumn").getElementsByTagName("DIV");
        for (var vx_div_clra=0; vx_div_clra<vx_div_clr.length; vx_div_clra++) {
        if (vx_div_clr[vx_div_clra].className) {
        vx_div_clr[vx_div_clra].className = "";
        }
        }