function set_item_class(id) {

    var hfCount = document.getElementById("ctl00_ctl00_cp1_cp1_ctrlClassicProject_hfProjectCount");
    for(i=1;i<=hfCount.value;i++)
    {
        if(id==i)
        {
            document.getElementById("pro_"+i+"_1").style.display="";
            document.getElementById("pro_"+i+"_2").style.display="none";
        }
        else
        {
            document.getElementById("pro_"+i+"_1").style.display="none";
            document.getElementById("pro_"+i+"_2").style.display="";
        }
    }
}