// JavaScript Document
window.onload = initArrow();



function sayHi(month){
	
	if(document.getElementById(month).name == "off"){
		document.getElementById(month).name = "on";
		//alert(document.getElementById(month).src);
		document.getElementById(month).src = "image/2008/arrow_ex.gif";
	}else{
		document.getElementById(month).name = "off";
		document.getElementById(month).src = "image/2008/arrow.gif";
	}
}