// Menu JS on/off functions

// Last modified: Fri, 04 Nov 2005 12:44:20 GMT

var img = [];
//images array

function preload(prefix) {
    var i=0,t='';
    while(t=arguments[++i]) {
        img[t+'_i'] = new Image();
        img[t+'_a'] = new Image();
        img[t+'_i'].src = prefix+t+'_i.gif';
        img[t+'_a'].src = prefix+t+'_a.gif';
    }
}

function activate(n) {
    document.images[n].src = img[n+'_a'].src
}

function deactivate(n) {
    document.images[n].src = img[n+'_i'].src
}

// blocks pasting by ctrl+v
function stopPaste(evt) {
    if(!evt) evt = event;
    var ctrl = (typeof evt.modifiers == "undefined") ? evt.ctrlKey : evt.modifiers & evt.CONTROL_MASK;
    var v = (typeof evt.which == "undefined") ? evt.keyCode == 86 : evt.which == 86;

    // If the control and 'V' keys are pressed at the same time
    if (ctrl && v) {
        this.value = "";
        return false;
    }
    return true;
}

preload('/images/','bt_homepage', 'bt_benefits', 'bt_member', 'bt_invite', 'bt_about', 'bt_data', 'bt_contact', 'bt_faq', 'bt_terms', 'bt_article', 'bt_newsletter', 'bt_request');