function PopupWin(bookURL){
	var winTop = (screen.height /2) - 90;
	var winLeft = (screen.width /2) - 150;
	var winFeat = "menubar=no,status=yes,toolbar=no,scrollable=yes,height=150,width=340";
	winFeat = winFeat+",top="+winTop+",left="+winLeft;
	var newWin = window.open(bookURL,'popup'+Math.round(Math.random()*99),winFeat);
}

function PopupWin2(bookURL,w,h){
	var winLeft = (screen.width /2) - (w/2);
	var winTop = (screen.height /2) - (h/2);
	var winFeat = "menubar=no,status=yes,toolbar=no,resizable=yes,scrollable=yes,height="+h+",width="+w;
	winFeat = winFeat+",top="+winTop+",left="+winLeft;
	var newWin = window.open(bookURL,'popup'+Math.round(Math.random()*99),winFeat);
}

function ToThumb(image){
	dot=image.lastIndexOf(".");
	if(dot!=-1){
		filename=image.substr(0,dot);
		format=image.substr(dot+1,image.length-dot);
		return filename+"_thumb."+format;
	}else{
		return image;
	}
}