var bNetscape4plus = (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1) >= "4");
var bExplorer4plus = (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1) >= "4");
//³×½ºÄÉÀÌÇÁ°¡ ´©±¸¿©--;

function CheckUIElements()
{
	var layerYsize=590; //¹è³Ê ¼¼·Î»çÀÌÁî
	//ÇöÀç °¢°¢ÀÇ Æ÷Áö¼Ç°ª ÀúÀå
	var ClientHead,ClientTail,BarHead,BarTail;
	ClientHead=document.body.scrollTop;
	if (ClientHead<145) ClientHead=145;
	//if (ClientHead<6) ClientHead=6;
	ClientTail=ClientHead+document.body.clientHeight-5;
	BarHead=parseInt (divMenu.style.top, 10);
	//343
	BarTail=BarHead+layerYsize+93;
	//ÇöÀç »óÅÂ ÆÇ´Ü
	var NowPos;
	if (BarTail<=ClientHead) NowPos=5;
else
	{
	if (BarHead>=ClientTail) NowPos=6;
else
	{
	if (BarHead<ClientHead && BarTail>ClientHead) 
	{
		if (BarTail<ClientTail) NowPos=1;
		else NowPos=3;
	} else
	if (BarHead>ClientHead && BarTail>ClientTail) NowPos=2;
	else NowPos=4;
}
	}
	var offset;
	switch (NowPos)
	{
		case 1:
		offset=Math.ceil(Math.abs(ClientTail-BarTail) / 10);
		divMenu.style.top = parseInt (divMenu.style.top, 10) + offset;
		break;
		case 2:
		offset=Math.ceil(Math.abs(BarHead-ClientHead) / 10);
		divMenu.style.top = parseInt (divMenu.style.top, 10) - offset;
		break;
		case 4:
		offset=Math.ceil(Math.abs(BarHead-ClientHead) / 10);
		divMenu.style.top = parseInt (divMenu.style.top, 10) - offset;
		break;
		case 5:
		offset=Math.ceil(Math.abs(ClientHead-BarHead) / 10);
		divMenu.style.top = parseInt (divMenu.style.top, 10) + offset;
		break;
		case 6:
		offset=Math.ceil(Math.abs(BarHead-ClientHead) / 10);
		divMenu.style.top = parseInt (divMenu.style.top, 10) -offset;
		break;
		
	}
	setTimeout ("CheckUIElements()", 100);
}


function OnLoad()
{
        var y;

     
        // Æä¿¡Áö ·Îµù½Ã Æ÷Áö¼Ç
        if ( bNetscape4plus ) {
                document["divMenu"].top = top.pageYOffset + 205;
                document["divMenu"].visibility = "visible";
        }
        else if ( bExplorer4plus ) {
                divMenu.style.top = document.body.scrollTop + 205;
                divMenu.style.visibility = "visible";
        }

        // initializing UI update timer
        CheckUIElements();
        return true;
}