function switchProduct(strDiv,bolVisible,num,selectedDiv,sHeight){
    
    document.getElementById("home-text1").style.height = sHeight * 30 + "px";
    for (d=1; d<=num; d++) {
        if (d == selectedDiv) {
            document.getElementById("pro-"+d).style.visibility = "visible";
            document.getElementById("pro-x").style.visibility = "hidden";
        } else {
            document.getElementById("pro-"+d).style.visibility = "hidden";
        }
    }
    
    
    if (strDiv == "pro-x") {
        document.getElementById("pro-x").style.visibility = "visible";
    }
    
}