//Only to be used by those pages in the "pages/titles/" directory
//It allows the reviews of the books to be collapsed or expanded.

//Preload images
var imgPlus = new Image();
var imgMinus = new Image();
imgPlus.src = "../../images/buttons/plus.jpg";
imgMinus.src = "../../images/buttons/minus.jpg";
        
//Expand/Collapse the reviews for the books
function viewReviews(pmImg, span)
{
    if (document.getElementById(pmImg).src != imgMinus.src)
    {
        document.getElementById(pmImg).src = imgMinus.src;
        document.getElementById(span).style.display='';
    }
    else
    {
        document.getElementById(pmImg).src = imgPlus.src;
        document.getElementById(span).style.display='none';
    }
}