var lastTabNo;        
var tabBkSelected = '#6c94c8';

ImageTab= new Image(); ImageTab.src = "../images/home/home-rpanel-corner.jpg";
ImageTabSel= new Image(); ImageTabSel.src = "../images/home/home-rpanel-corner-sel.jpg";

function setTab(tabNo)
{    
    var tab = document.getElementById('tab'+tabNo);
    var tabContent = document.getElementById('contentTab'+tabNo);
    
    if(lastTabNo != null)
    {                
        var lastTab = document.getElementById('tab'+lastTabNo);
        var lastTabContent = document.getElementById('contentTab'+lastTabNo);
        
        lastTab.className = 'tab';
        lastTabContent.style.display = 'none';
    }    
    tab.className = 'tab tabSelected';
    tabContent.style.display = 'block';
    
    lastTabNo = tabNo;
}