if (document.getElementById) {
    document.write("<style type='text/css'>");
    document.write(".b_blocktoggle {display: none}");
    document.write("</style>");
    var shown = new Array();
}

function blocktoggle(i) {
    if (document.getElementById) {
        shown[i] = (shown[i]) ? false : true;
        currentdisplay = (shown[i]) ? 'block' : 'none';
        document.getElementById('b_blocktoggle'+i).style.display = currentdisplay;
    }
}

function blockdisplay(i) {
    if (document.getElementById){
        if (document.getElementById("b_blockdisplay"+i)) {
            for ( j = 1; j < 1000; j++ ) {
                if (document.getElementById('b_blockdisplay' + j)) {document.getElementById('b_blockdisplay' + j).style.display = 'none';}
                else {j = 1000;}
            }
            if (i) {document.getElementById("b_blockdisplay"+i).style.display = 'block';}
        }
    }
}