function popup(url){
	window.open(url,"popwin","scrollbars=yes,menubar=no,toolbar=no,width=580,height=700");
}


function popflip(url){
window.open(url, "pageFlip", "location=no,menubar=no,resizable=no,scrollbars=no,status=no,toolbar=no,left='+(screen.availWidth-672)/2+',top='+(screen.availHeight-512)/2+',width=672,height=512");
}