function toggle(elementid) {
	var theItem = $(elementid);

	if( theItem.style.display == "none")	{
		new Effect.BlindDown(theItem, {duration: 0.5});
	}else{
		new Effect.BlindUp(theItem, {duration: 0.5});
	}
}

function hideLoader(loader, target) {
	new Effect.Fade($(loader), {duration: 0.5});
	new Effect.BlindDown($(target));
}

var g_USER_AGENT = getAgent();
// return NN4, NN5(Netscape 6+, Mozilla 1+?), IE4, IE5(IE5+), Unknown
function getAgent(){
  	var userAgent = navigator.userAgent;
  	var charIndex;
  	var majorVersion;
		
  	charIndex = userAgent.indexOf("MSIE");
  	if(charIndex){
		majorVersion = userAgent.charAt(charIndex + 4 + 1);
		if(majorVersion > 4){
		  return("IE5");
		}
		else if(majorVersion == 4){
		  return("IE4");
		}
		}
		
		charIndex = userAgent.indexOf("Mozilla");
		majorVersion = userAgent.charAt(charIndex + 7 + 1);
		if(majorVersion > 4){
		return("NN5");
		}
		else if(majorVersion == 4){
		return("NN4");
		}
		
		return("Unknown");
		}

function getWindowYOffset(){
  	if(g_USER_AGENT == "IE5" || g_USER_AGENT == "IE4"){
		return document.body.scrollTop;
		}else if(g_USER_AGENT == "NN5" || g_USER_AGENT == "NN4"){
		return window.pageYOffset;
		}else{
		return 0;
		}
		}
		
		var waitTimer;
		function jumpTo(dstY, srcY, scrollRate, waitMillSec) {
		if(waitTimer){
		clearTimeout(waitTimer);
		}
		if( ! dstY || dstY < 0 ){
		dstY = 0;
		}
		if( ! srcY ){
		srcY = 0 + getWindowYOffset();
		}
		if( ! scrollRate ){
		scrollRate = 6;
		}
		if( ! waitMillSec ){
		waitMillSec = 20;
		}
		
		srcY += (dstY - getWindowYOffset()) / scrollRate;
		if(srcY < 0){
		srcY = 0;
		}
		posY = Math.floor(srcY);
		window.scrollTo(0, posY);
		
		if(posY != dstY){
		waitTimer = setTimeout("jumpTo("+ dstY +", "+ srcY +", "+ scrollRate +", "+ waitMillSec +")", waitMillSec);
		}
		else if(posY == dstY){
		clearTimeout(waitTimer);
		}
		else if(posY < 1){
		window.scroll(0, 0);
		}
		}
		
function backUp(){
	  jumpTo(0, 0, 7, 14);
		}