function welcomeshow(divid,i)
{
    var n1=document.getElementById("n1");
    var n2=document.getElementById("n2");
    var n3=document.getElementById("n3");
    var n4=document.getElementById("n4");
    
    n1.style.display="none";
    n2.style.display="none";
    n3.style.display="none";
    n4.style.display="none";
    
    var divid=document.getElementById(divid);
    divid.style.display = "block";
    
    var img_d1=document.getElementById("img_d1");
    var img_d2=document.getElementById("img_d2");
    var img_d3=document.getElementById("img_d3");
    var img_d4=document.getElementById("img_d4");
    img_d1.src = "images/item1.gif";
    img_d2.src = "images/item2.gif";
    img_d3.src = "images/item3.gif";
    img_d4.src = "images/item4.gif";
    
    var img = document.getElementById("img_d"+i);
    
    img.src = 'images/item'+i+'_over.gif';
    
}