var popObj;
var timm;


var curentA = 0;
function show_tit_popup(){
	if(document.getElementById('popupDiv')){
		if(document.getElementById('pop_shade_frame')){
			document.getElementById('pop_shade_frame').style.height = document.body.scrollHeight + 'px';
			document.getElementById('pop_shade_frame').style.visibility = 'visible';
		}
		if(document.getElementById('popup_shade')){
			document.getElementById('popup_shade').style.height = document.body.scrollHeight + 'px';
			document.getElementById('popup_shade').style.visibility = 'visible';
		}
		popObj = document.getElementById('popupDiv');
		var sw = screen.availWidth;
		var sh = (screen.availHeight-150);
		var w = document.getElementById('popupDiv').offsetWidth;
		var h = document.getElementById('popupDiv').offsetHeight;
		var tp = ((sh-h)/2);
		if(tp<0){
			tp = 0;
		}
		popObj.style.top = tp+'px';
		popObj.style.left = ((sw-w)/2)+'px';
		popObj.style.visibility = 'visible';
		timm = setInterval("popupFade()", 50);
	}

}

function hidePopup(){
	if(popObj){
		popObj.style.visibility = 'hidden';
	}
	if(document.getElementById('popup_shade')){
		document.getElementById('popup_shade').style.visibility = 'hidden';
	}
	if(document.getElementById('pop_shade_frame')){
		document.getElementById('pop_shade_frame').style.visibility = 'hidden';
	}
}

function popupFade(){
	if(popObj){
		if(curentA<1){
			curentA += 0.2;
			popObj.style.opacity = curentA;
			popObj.style.filter = "alpha(opacity = "+curentA*100+")";
		}
		else{
			clearInterval(timm);
			popObj.style.opacity = 1;
			popObj.style.filter = "alpha(opacity = 100)";
			document.cookie="_bzz=" +escape(bz);
		}
	}
}