function hideAll(){
    for(i=1;i<14;i++){
        if(document.getElementById("top"+i+"_sub")){
            document.getElementById("top"+i+"_sub").style.visibility = "hidden";
        }
        if(document.getElementById("top"+i+"_img")){
            selImgObj =  document.getElementById("top"+i+"_img");
            selImgObjOffSrc = selImgObj.src;
            selImgObjOnSrc = selImgObjOffSrc.replace("_on","_off");
            selImgObj.src = selImgObjOnSrc;
        }
    }
}

function setTopStateOn(selObj){
    hideAll();
    selObjId = selObj.id
    selObjImgId = selObjId+"_img";
    selImgObj =  document.getElementById(selObjImgId);
    selImgObjOffSrc = selImgObj.src;
    selImgObjOnSrc = selImgObjOffSrc.replace("_off","_on");
    selImgObj.src = selImgObjOnSrc;
    selSubObj = selObjId+"_sub";
    if(document.getElementById(selSubObj)){
        document.getElementById(selSubObj).style.visibility = "visible";
    }
}

function setTopStateOff(selObjId){
    selSubObj = selObjId+"_sub"; 
    if(document.getElementById(selSubObj)){
        if(document.getElementById(selSubObj).style.visibility == "visible"){
            tdObj.style.backgroundColor ="#00cccb"
        }
    }
}

function renderWPage(){
	if (document.images){
		w_menu_home = new Image(70,38); 
		w_menu_home.src="../images/nav_home_on.jpg"; 
		
		w_menu_about = new Image(101,38); 
		w_menu_about.src="../images/nav_about_on.jpg"; 
		
		w_menu_structure = new Image(126,38); 
		w_menu_structure.src="../images/nav_structure_on.jpg"; 
		
		w_menu_publications = new Image(112,38); 
		w_menu_publications.src="../images/nav_publications_on.jpg"; 
		
		w_menu_feedback= new Image(72,38); 
		w_menu_feedback.src="../images/nav_feedback_on.jpg";
		 
		w_menu_news = new Image(47,38); 
		w_menu_news.src="../images/nav_news_on.jpg"; 
		
		w_menu_adminlogin = new Image(89,38); 
		w_menu_adminlogin.src="../images/nav_adminlogin_on.jpg"; 
		
		w_menu_research = new Image(68,38); 
		w_menu_research.src="../images/nav_research_on.jpg"; 
		
	}
}