function submenu_show(id,pic){
			submenu_hidden("submenu_p3");
			submenu_hidden("submenu_p4");
			submenu_hidden("submenu_p5");
			submenu_hidden("submenu_p6");
			submenu_hidden("submenu_p7");
			submenu_hidden("submenu_p8");
			submenu_hidden("submenu_p9");

			if(document.all){
				myEvent = window.event;
				GetElementObject(id).style.display="block";
				GetElementObject(id).style.position="absolute";
				GetElementObject(id).style.visibility="visible";
				GetElementObject(id).style.left=(myEvent.clientX-15)+'px';
				GetElementObject(id).style.top=(myEvent.clientY+25)+'px';
			}else{
				x=document.images[pic].x;
				y=document.images[pic].y+document.images[pic].height;	
				SetElementAttribute(id,"class","submenu_show");
				SetElementAttribute(id,"style",'left:'+x+'px;top:'+y+'px;');		
			}	
		}
		function submenu_hidden(id){
			SetElementAttribute(id,'class','submenu_hidden');
			SetElementAttribute(id,'style','');
			GetElementObject(id).style.display="none";
			GetElementObject(id).style.visibility="hidden";
		}
		function menu_hidden(id){
			GetElementObject(id).style.display="none";
		}
		function SetElement(element_id,content){
		var element;
		if(element=document.getElementById(element_id)){
			if(element.innerHTML!=content)
			element.innerHTML=content;
		}else if(element=document.all(element_id)){
			if(element.innerHTML!=content)
			element.innerHTML=content;
		}
		}
		function SetElementAttribute(element_id,attr,content){
		var element;
		if(element=document.getElementById(element_id)){
			if(element.innerHTML!=content)
			element.setAttribute(attr,content);
		}else if(element=document.all(element_id)){
			if(element.innerHTML!=content)
			element.setAttribute(attr,content);
		}
		}
		function GetElement(element_id){
		var element;
		if(element=document.getElementById(element_id)){
			return element.innerHTML;
		} else if(element=document.all(element_id)){
			return element.innerHTML;
		}
		}
		function GetElementAttribute(element_id,attr){
		var element;
		if(element=document.getElementById(element_id)){
			return element.getAttribute(attr);
		} else if(element=document.all(element_id)){
			return element.getAttribute(attr);
		}
		}
		function GetElementObject(element_id){
		var element;
		if(element=document.getElementById(element_id)){
			return element;
		} else if(element=document.all(element_id)){
			return element;
		}
		}
		function RemoveElementAttribute(element_id,attr){
		var element;
		if(element=document.getElementById(element_id)){
			element.removeAttribute(attr);
		} else if(element=document.all(element_id)){
			element.removeAttribute(attr);
		}
		}

		img_dir="http://inservice.edu.tw/EPaper/200712/image";
		function pItem (name, width, height) {
		this.on = new Image();
		this.on.src =img_dir+"/"+name + "on.gif"
		this.off = new Image();
		this.off.src =img_dir+"/"+ name + "off.gif"
		}
		function p_new (name) {
		pItem[name] = new pItem(name);
		}
		function img_act (imgName) {
			if (document.images) document[imgName].src = pItem[imgName].on.src;
		}
		function img_inact (imgName) {
			if (document.images) document [imgName].src = pItem[imgName].off.src;
		}
		function load_p (name, num) {
		for (i = 1; i <= num; i++) p_new(name + i);
		}
			if (document.images != null) load_p ('p', 20);