function hover(img, in_out){
		var rollover = document.getElementById(img.id + "_rollover");
		
		if(null == rollover) return;
		
		var menu_img = getCurrentMenuImg();
		
		var currcheck = (null == menu_img ? true: ((img.src == menu_img.src  &&  -1 == rollover.src.indexOf("true")) ||  img.src != menu_img.src ));
		
		if(currcheck){
			rollover.src = (in_out ? 'z_images/img-rollover-true.jpg':'z_images/img-rollover-false.jpg');
		}
	}
	
	function getCurrentMenuImg(){
		var currhref = getCurrentHref();
		
		if("" != currhref){
			return document.getElementById("menu_" + currhref);
		}
		
		return null;
	}
	
	function getCurrentHref(){
		var href = document.location.href;
		var dot_idx = href.lastIndexOf(".");
		
		if(-1 != dot_idx){
			var slash_idx = href.lastIndexOf("/");
			return href.substr((slash_idx + 1), (dot_idx - slash_idx - 1));
		}
		
		return "";
	}
	
	function checkMenu(){
		var menu_img = getCurrentMenuImg();
		if(null != menu_img){
			hover(menu_img, true);
		}
	}
	
	function getBannerImageSrc(){
	
		var currhref = getCurrentHref();
		
		if("" != currhref){
			
			return "z_images/header-" + currhref + ".jpg";
			
		}
	
		return "z_images/header-image.jpg"
	}