function popup(url) {
	window.open(url, "popup", "height=400,width=600,scrollbars=yes,alwaysRaised=yes");
}

function changeBanner()
{
    var i; 
    
    if (nextbanner<bannercount) 
    {
        for(i = 0; i <= 100; i=i+5) 
        { 
            setTimeout("changeOpac("+(100-i)+",'banner"+thisbanner+"')", 10 * i); 
            setTimeout("changeOpac("+i+",'banner"+nextbanner+"')", 10 * i); 
        } 
        thisbanner = nextbanner;
        nextbanner = nextbanner+1;
        if (nextbanner>=bannercount) nextbanner = 0;
        setTimeout("changeBanner()", 5000); 
    }       
}

function changeOpac(opacity, id) { 
    var object = document.getElementById(id).style; 
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")"; 
    if (opacity > 0) 
    {
        object.display = "block";
    }
    else
    {
        object.display = "none";
    }
}