function switchDiv(divNum){
    //swap home page tab buckets//
    
    //product development
    if(divNum == "tab1"){
        document.getElementById('tab1').style.visibility = "visible";
        document.getElementById('tab2').style.visibility = "hidden";
        document.getElementById('tab3').style.visibility = "hidden";
        document.getElementById('tab4').style.visibility = "hidden";    
    }
    
    //product commercialization
    if(divNum == "tab2"){
        document.getElementById('tab1').style.visibility = "hidden";
        document.getElementById('tab2').style.visibility = "visible";
        document.getElementById('tab3').style.visibility = "hidden";
        document.getElementById('tab4').style.visibility = "hidden";    
    }
    
    //licensing and acquisition
    if(divNum == "tab3"){
        document.getElementById('tab1').style.visibility = "hidden";
        document.getElementById('tab2').style.visibility = "hidden";
        document.getElementById('tab3').style.visibility = "visible";
        document.getElementById('tab4').style.visibility = "hidden";    
    }
    
    //brand development
    if(divNum == "tab4"){
        document.getElementById('tab1').style.visibility = "hidden";
        document.getElementById('tab2').style.visibility = "hidden";
        document.getElementById('tab3').style.visibility = "hidden";
        document.getElementById('tab4').style.visibility = "visible";    
    }
    
}