// JavaScript Document

//pn Ò³Êý
//id µ±Ç°Ò³ID
//ext ǰ׺
function page_cotrl(pn,ext,id){
	var current=document.getElementById(ext+id);
	 // alert(ext+id);
	//alert(id);
	//alert(current.id);
	for(var i=1;i<=pn;i++){
	   if((ext+id)==(ext+i)){
		  document.getElementById(ext+i).style.display="block";		
	   }else{
		  document.getElementById(ext+i).style.display="none";
	   }
	}
	
	if(parseInt(id)>=2){
		document.getElementById(ext+'pre').style.display="";
		document.getElementById(ext+'pre').name=(parseInt(id)-1);
		document.getElementById(ext+'next').innerHTML='Next'
	}else{
		document.getElementById(ext+'pre').style.display="none";
		document.getElementById(ext+'next').innerHTML='More'
	}
	
	if(parseInt(id)<pn){
    document.getElementById(ext+'next').style.display="";
	document.getElementById(ext+'next').name=(parseInt(id)+1);
	}else{
	 document.getElementById(ext+'next').style.display="none";
	}

}