function showLoginRecommended(){
	popup=document.getElementById('cart_login_popup');
	popup_back=document.getElementById('cart_login_popup_back');
	popup_back.style.height = document.body.offsetHeight+"px";
	popup.style.left = (document.body.offsetWidth-540)/2+"px";
	popup_back.style.width = (document.body.offsetWidth)+"px";
	popup_back.style.display="block";
	popup.style.top = (getScroll()+100)+"px";
	popup.style.display="block";
	selects = document.getElementsByTagName('select');
	for(sel in selects) {if(typeof selects[sel] == "object"){
		if(selects[sel].style==null) selects[sel].style={};
	 selects[sel].style.display="none";
	}}
}

function getScroll(){
	if (self.pageYOffset) {
		return self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){
		return document.documentElement.scrollTop;
	} else if (document.body) {
		return document.body.scrollTop;
	}
}