var selYear=2009;
var selMonth = 12;
var minYear = 2008;
var maxYear = 2010;
 
function preYear(evt){
	if(evt.preventDefault)
		evt.preventDefault();
	else
		evt.returnValue = false;
	setYearMonth( selYear-1 , selMonth );
}
function nextYear(evt){
	if(evt.preventDefault)
		evt.preventDefault();
	else
		evt.returnValue = false;
	setYearMonth( selYear+1 , selMonth );
	
}

function setYearMonth(year,month){
	try {
		selYear = year;
		selMonth = month;
		EL("year_month").value = year + "." + fix2(month,2);
		EL("span-year").innerHTML = year+"年";
	}catch(ex){
		alert(ex);
	}

}
function clickMonth( month ){
	 setYearMonth( selYear,month );
}

function fix2(n,w){
	return (n/Math.pow(10,w)).toFixed( w ).split(".")[1];
}

 
domReady.add(function(){
	if (isIE == 6) {
		EL("div-year_month").onmouseover = function(){
			addCssClass(this, "year_month-hover");
			//addCssClass( EL("year_month-menu"),"visible" ) ;
			
			//EL("year_month-menu").style.display = "block";
			
		}
		EL("div-year_month").onmouseout = function(){
			removeCssClass(this, "year_month-hover");
			//removeCssClass( EL("year_month-menu"),"visible" );
			//EL("year_month-menu").style.display = "none";
		}
	}
	var dt = EL("year_month").value.split(".");
	selYear=parseInt(dt[0],10);
	selMonth = parseInt(dt[1],10);
	EL("span-year").innerHTML = selYear;
})