var newsticker_count = 0;
var newsticker = new Array();
var newsticker_offset = new Array();

function vh_newsticker(id, width) {
    div = document.getElementById(id);
    newsticker_offset[newsticker_count] = width;
    newsticker[newsticker_count] = div.firstChild;
    window.setInterval("vh_newsticker_move("+String(newsticker_count)+", "+String(width)+")", 30);
    ++newsticker_count;
}

function vh_newsticker_move(n, w) {
    if (newsticker_offset[n] < -w) {
	newsticker_offset[n] = w;
    } else {
	newsticker_offset[n] -= 2;
    }
    newsticker[n].style.left = String(newsticker_offset[n])+'px';
}

function activate_sovd_button(img) {
    var file = img.getAttribute("src");
    if (file.substr(file.length-5, 1) != "_") {
	var base = file.substr(0, file.length-4);
	img.setAttribute("src", base + "_.png");
    }
}

function deactivate_sovd_button(img) {
    var file = img.getAttribute("src");
    if (file.substr(file.length-5, 1) == "_") {
	var base = file.substr(0, file.length-5);
	img.setAttribute("src", base + ".png");
    }
}