function goToCaseStudy(id) {
	window.location.href = 'case-study.php?id='+id;
}

function selectCategory(url, id) {
	if (id == '--') {
		window.location.href = 'books.php';
	} else {
		window.location.href = 'series.php?id='+id;
	}
}

function popBookCover(img,winName,winWidth,winHeight) {
    var popup_width=winWidth;
    var popup_height=winHeight;
    var screen_width=window.screen.width;
    var screen_height=window.screen.height-36;
    var popup_left=Math.round((screen_width-popup_width)/2);
    var popup_top=Math.round((screen_height-popup_height)/2);  
    
    theURL = "book-cover.php?img="+img+"&title="+winName;
	
	//popupwindow=window.open(theURL,winName,"height="+winHeight+",width="+popup_width+",scrollbars=auto,toolbar=no,location=no,status=yes,menubar=no,resizable=yes");
	popupwindow=window.open(theURL,'book','scrollbars=auto,toolbar=no,location=no,status=yes,menubar=no,resizable=yes');
	popupwindow.moveTo(popup_left,popup_top);
	popupwindow.resizeTo(winHeight,popup_width);
}