var imgOpen = new Image(); // for down-arrow image
var imgClose = new Image(); // for right-arrow image
imgOpen.src = "images/blue_dot_open.gif";
imgClose.src = "images/blue_dot_close.gif";

function openMenu(linkidx) {
	var imgobj = document.all("pdot");
	var divobj = document.all("smenu");	
	if (divobj[linkidx].style.display == "inline") {
		imgobj[linkidx].src = imgOpen.src;	
		divobj[linkidx].style.display = "none";		
	} else {
		divobj[linkidx].style.display = "inline";
		imgobj[linkidx].src = imgClose.src;
	}
	return;
}


function closeAllMenu() {
  	var imgobj = document.all("pdot");
  	var divobj = document.all("smenu");
  
  	var objcnt = divobj.length;
  	for (var j=0; j < imgobj.length; j++)
		imgobj[j].src = imgOpen.src;
	for (var k=0; k < objcnt; k++)
		divobj[k].style.display="none";
}