function f(q) {
	var o=event.srcElement;var f=o.filters[1];var a=o.filters[0];
	f.Apply();a.opacity=50*(1+q);f.Play();
}

function advance(e) {
	kc = window.event.keyCode;
	if (kc) {
		if(kc==32||kc==39) {btnForward.click();return false}
		if(kc==8||kc==37) {btnBack.click();return false}
		if(kc==27) window.close();
	}
	return true;
}

function siv(picId) {
	if (document.getElementById) {
		var st=document.getElementById("pic"+picId);
		var w=st.width;
		var ol=st.offsetParent.offsetLeft;
		var ow=strip.offsetWidth;
		strip.scrollLeft=ol-(ow-w)/2;
	}
}