function abspos(){  // 클릭 이벤트가 발생한 바로 그 위치
	try{
       this.x = event.screenX - window.screenLeft - document.body.clientLeft + document.body.scrollLeft  - event.offsetX;
       this.y = event.screenY - window.screenTop - document.body.clientTop + document.body.scrollTop  - event.offsetY;
       return this;
	}catch(e){}
	try{
       this.x = event.screenX - window.screenLeft - document.body.leftMargin + document.body.scrollLeft  - event.offsetX;
       this.y = event.screenY - window.screenTop - document.body.topMargin + document.body.scrollTop  - event.offsetY;
       return this;
	}catch(e){}
   }

function layerPositionSet(div_id) {
    var d = document.getElementById(div_id);
	d.style.display='block';
    
    var pos = abspos();
    pos.y += 10;
    d.style.left = pos.x  + 50;
    d.style.top = pos.y + 10;
}