function selectTab(activeTab,tabNo)
{
    document.getElementById("descriptionDiv").style.display = "none";
    document.getElementById("associatedDiv").style.display = "none";
    document.getElementById("essentialsDiv").style.display = "none";
    document.getElementById("reviewsDiv").style.display ="none"
    
    document.getElementById(activeTab).style.display = "";    
    
    document.getElementById("selectFullDetails").className = "";
    document.getElementById("selectAssociated").className = "";
    document.getElementById("selectEssentials").className = "";
    document.getElementById("selectReviews").className = "";
    
    if (tabNo == 0)
        document.getElementById("selectFullDetails").className = "selected";
    
    if (tabNo == 1)
        document.getElementById("selectAssociated").className = "selected";
        
    if (tabNo == 2)
        document.getElementById("selectEssentials").className = "selected";

    if (tabNo == 3)
        document.getElementById("selectReviews").className = "selected";
}