function layer_open() {
	document.getElementById("layer_open").style.display = "inline";
	document.getElementById("layer_bg").style.display = "inline";
	layer_bg();
}
function layer_close() {
	document.getElementById("layer_open").style.display = "none";
	document.getElementById("layer_bg").style.display = "none";
	var x=0, y=0; 
}

function layer_bg(){
	if ((screen.height - 150) >= document.all.tags('body')[0].scrollHeight){   // ���ΰ��� ��ũ�� ũ�⸦ �Ѿ�̡��E�÷���
		document.getElementById("layer_bg").style.height = "100%";
	}
	else {
		document.getElementById("layer_bg").style.height = document.all.tags('body')[0].scrollHeight;
	}
	document.getElementById("layer_bg").style.display = "inline"; //���̾�E���̰���
}



//------------ ����E��?��ü �巡�� 
var bdown = false; 
var x, y; 
var sElem; 
//------------------------------------ IE��E�E
function mdown_IE() { 
    if(event.srcElement.className == "drag") { 
        bdown = true; 
        sElem = event.srcElement; 
        x = event.clientX; 
        y = event.clientY; 
    } 
} 
function mup_IE() { 
    bdown = false; 
} 
function changeInt(num){ 
    var temp = parseInt(num); 
    if(isNaN(temp)){ 
        temp = 0; 
    } 
    return temp; 
} 
function moveimg_IE() { 
    if(bdown) { 
        var distX = event.clientX - x; 
        var distY = event.clientY - y; 
        sElem.style.left =changeInt(sElem.style.left) + distX; 
        sElem.style.top  = changeInt(sElem.style.top) + distY; 
        x = event.clientX; 
        y = event.clientY; 
        return false; 
    } 
} 
//----------------------------------- IE�� �ƴҰ濁EFF����) 
function mdown_FF(event){ 
    // Netscape 
    if (event.which !=1){ 
        return false; 
    } 
    else{ 
        if(event.target.className == "drag") { 
            bdown = true; 
            //sElem = event.srcElement; 
            sElem = event.target ; 
            x = event.clientX; 
            y = event.clientY; 
        } 
    } 
} 
function mup_FF(event) { 
    bdown = false; 
} 
function moveimg_FF(event) { 
    if(bdown) { 
        var distX = event.clientX - x; 
        var distY = event.clientY - y; 
        sElem.style.left =changeInt(sElem.style.left) + distX; 
        sElem.style.top  = changeInt(sElem.style.top) + distY; 
        x = event.clientX; 
        y = event.clientY; 
        return false; 
    } 
} 
//------------------- �̺�Ʈ ���� 
if (!document.all){ 
    //FF�� �� ��E�ֵ��� 
    document.captureEvents(Event.MOUSEDOWN); 
    document.onmousedown=mdown_FF; 
    document.captureEvents(Event.MOUSEMOVE); 
    document.onmousemove = moveimg_FF; 
    document.captureEvents(Event.MOUSEUP); 
    document.onmouseup = mup_FF; 
} 
else{ 
    document.onmousedown = mdown_IE; 
    document.onmouseup = mup_IE; 
    document.onmousemove = moveimg_IE; 
} 



//------------------- �����޴� ���̾�E��E�E�E

function guide(idx) {
	for(i=1 ; i<=3 ; i++) {
		var guide = document.getElementById("guide0"+i);
		if(idx == i) {
			if(guide.style.display == "inline") {
				guide.style.display = "none";
			}
			else {
				guide.style.display = "inline";
			}
		}
		else {
			guide.style.display = "none";
		}
	}
}

function guide_close(idx) {
	document.getElementById("guide0"+idx).style.display = "none";
}