// JavaScript Document
function FamNav(){
	var display_obj;
	var prevBtns;
	var nextBtns;
 	var upBtns;
	//----
	this.init = function(){
		 	display_obj = window.display_obj;
			//---- MAKE DYNAMIC CHAPTER BTNS
			if(!window.scorm){
				var navImgs = display_obj.getNavImgs();
				var btnCount = 0;
				for(var i=1; i<navImgs.length; i++){
					if(navImgs[i].className == 'button'){
						btnCount++;
						dynamic_c_btn(navImgs[i], btnCount);
					}
				}
			}
			//---- MAKE DYNAMIC PAGE BUTTONS
			prevBtns = display_obj.getPrevBtns();
			nextBtns = display_obj.getNextBtns();
			upBtns   = display_obj.getUpBtns();
			for(var i=0; i<prevBtns.length; i++)
			  dynamic_p_btn(prevBtns[i]);
			for(var i=0; i<nextBtns.length; i++)
			  dynamic_n_btn(nextBtns[i]);
			for(var i=0; i<upBtns.length; i++)
			  dynamic_up_btn(upBtns[i]);
	}
	this.initDDMenu = function(){
		 var ddm = $('drop_down').lastChild;
			ddm.onchange = function(){
				$("feedback").style.visibility = "hidden"; //hide feedback for assessment if the chapter is clicked. added 05/11/2010
				 var index = ddm.selectedIndex;
					xc_obj.loadPage(xc_obj.getSections()[index]);
			}
	}
	//----
	function dynamic_c_btn(btn, chapIndex){
		 btn.onclick = function(){
			    $("feedback").style.visibility = "hidden"; //hide feedback for assessment if the chapter is clicked. added 05/11/2010
				 xc_obj.initChapter(chapIndex, 0);
			}
	}
	function dynamic_p_btn(btn, chapIndex){ // prev btn
		 btn.onmouseover = function(){
					this.firstChild.src = (btn.firstChild.name == 'backTop') ? 'images/back_over.gif' : 'images/back2_over.gif';
			}
			btn.onmouseout = function(){
				 this.firstChild.src = (btn.firstChild.name == 'backTop') ? 'images/back.gif' : 'images/back2.gif';
			}
			btn.onclick = function(){
				$("feedback").style.visibility = "hidden"; //hide feedback for assessment if the chapter is clicked. added 05/11/2010
				 xc_obj.loadPage(false, -1);
			}
	}
	function dynamic_n_btn(btn, chapIndex){// next btn
		 btn.onmouseover = function(){
				 this.firstChild.src = (btn.firstChild.name == 'nextTop') ? 'images/next_over.gif' : 'images/next2_over.gif';
			}
			btn.onmouseout = function(){
				 this.firstChild.src = (btn.firstChild.name == 'nextTop') ? 'images/next.gif' : 'images/next2.gif';
			}
			btn.onclick = function(){
				$("feedback").style.visibility = "hidden"; //hide feedback for assessment if the chapter is clicked. added 05/11/2010
				 xc_obj.loadPage(false, 1);
			}
	}
	function dynamic_up_btn(btn){
		 btn.onmouseover = function(){
		   this.firstChild.src = 'images/top_over.gif';
			}
			btn.onmouseout = function(){
				 this.firstChild.src = 'images/top.gif';
			}
			btn.onclick = function(){
				 window.document.location = "#";
			}
	}
	function $(a){
		var b = document.getElementById(a);
		return b;
	}
	
}