function swapImage(id,postFix)
{
    var e=document.getElementById(id);
    var idx=e.src.lastIndexOf('_');
    e.src=e.src.substring(0,idx+1)+postFix+".jpg";
}
function mon(c)
{
    swapImage(c.id+"_img","c");
    var a=document.getElementById(c.id+"_link");
    a.style.borderBottomColor="#888";
}
function mout(c)
{   
    swapImage(c.id+"_img","bw");
    var a=document.getElementById(c.id+"_link");
    a.style.borderBottomColor="#666";
}
function preloadImages() 
{
    if (document.images==null)
        return
    for (var i=0;i<preloadImages.arguments.length;i++)
        (new Image()).src = preloadImages.arguments[i];
}
function insertEmail()
{
    var email="mail"+"@"+"agnieszkalach.pl";
    var e=this.document.getElementById("email");
    e.href="mailto:"+email;
    e.innerHTML=email;
}