function pb_Hide()
{
document.getElementById('popup_banner').style.visibility='hidden';

	if (document.getElementById('pb_FlashBanner')){
		document.getElementById('pb_FlashBanner').style.visibility='hidden';
	}
}
function pb_Show()
{

var pb_w=document.getElementById("pb_Container").offsetWidth;
var pb_h=document.getElementById("pb_Container").offsetHeight;

var pb_Left = (screen.width - pb_w) / 2;
//var pb_Top = (screen.height - pb_h) / 2;
var pb_Top = 200;

var objBanner=document.getElementById('popup_banner');

objBanner.style.left=pb_Left + 'px';
objBanner.style.top=pb_Top + 'px';

objBanner.style.visibility='visible';
//shiftOpacity('popup_banner', 2000);

}
//filters
function opacity(id, opacStart, opacEnd, millisec) { 
    //speed for each frame 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 

    //determine the direction for the blending, if start and end are the same nothing happens 
    if(opacStart > opacEnd) { 
        for(i = opacStart; i >= opacEnd; i--) { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } else if(opacStart < opacEnd) { 
        for(i = opacStart; i <= opacEnd; i++) 
            { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } 
} 

//change the opacity for different browsers 
function changeOpac(opacity, id) { 
    var objectFB = document.getElementById(id).style; 
    objectFB.opacity = (opacity / 100); 
    objectFB.MozOpacity = (opacity / 100); 
    objectFB.KhtmlOpacity = (opacity / 100); 
    objectFB.filter = "alpha(opacity=" + opacity + ")"; 
} 
function shiftOpacity(id, millisec) { 
    //if an element is invisible, make it visible, else make it ivisible 
    if(document.getElementById(id).style.opacity == 0) { 
		opacity(id, 100, 0, millisec); 
    } else { 
        opacity(id, 0, 100, millisec); 
    } 
}