function changeBullet(strItem){
	 	var img;
	 	img = new Image();
	 	//try{
		 	img.src= "images/common/content/left_menu_arrow.gif"
			if (document.getElementById(strItem)){
				document.getElementById(strItem).src =img.src;
			}

			//document.getElementById("text_" + strItem).innerText
		//}
		//catch(ex){
		//	alert(ex.message);
		//}
 	}
 	
 	function changeMenu(strItem){
	 	var img;
	 	img = new Image();
	 	img.src= "images/common/head_menu_content/" + strItem + "_on.jpg";
		if (document.getElementById('nav_' + strItem)){
			document.getElementById('nav_' + strItem).src = img.src;
		}
 	}