function cpTransition(i, t, d) 
{
     try {
	    i.filters[0].Apply();
	 } catch (e) {	
		if(i.style.visibility == "visible") i.style.visibility = "hidden";
    	else i.style.visibility = "visible";
		return;
	}

	if(i.style.visibility == "visible") i.style.visibility = "hidden";
    else i.style.visibility = "visible";
	
	i.filters[0].duration=d;
	i.filters[0].transition=12;
    i.filters[0].Play();
}

function ChangeBgd()	
{
	var  i = document.getElementById('Span1');
	cpTransition(i, 23, 1.5); 
//	setTimeout('hide()',5000);
}

function hide()
{
	var  i = document.getElementById('Span1');
	if(i.style.visibility == "visible") i.style.visibility = "hidden";
}