
//------------ 마우스로 객체 드래그 
var bdown = false; 
var x, y; 
var sElem; 
//------------------------------------ IE전용 
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; 
    } 
} 
//----------------------------------- IE가 아닐경우(FF기준) 
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; 
    } 
} 
//------------------- 이벤트 등록 
if (!document.all){ 
    //FF도 될 수 있도록 
    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; 
}