http://oxtag.com/html/ex/dragimg.html
<html>
<head></head>
<!---소스가 다소 길지만 body 안에 살짝 넣으세요^^-->
<body bgcolor="#F6E0F6">
<p><font color=purple size=2>이거 응용하면 멋진 홈이^^</font></p>
<p><font color=red size=2>마우스로 까만 네모를 움직여보세요...</font></p>
<p><font color=purple size=2>
<SCRIPT>
// CREDITS:
// MapBlaster by Urs Dudli and Peter Gehrig
// Copyright (c) 2001 Peter Gehrig and Urs Dudli. All rights reserved.
// 이미지 축소 횟수
var shrinkfactor=5
// 작은 이미지의 위치
var thumbleft = 380
var thumbtop = 230
// 확대 이미지의 위치
var largeleft = 310
var largetop = 30
// 이미지 섹터의 위치
var clipwidth = 250
var clipheight = 167
</SCRIPT>
<SCRIPT>
<!--
var isNav, isIE
var offsetX, offsetY
var selectedObj
var largewidth = 0
var largeheight = 0
var thumbwidth = Math.floor(largewidth/shrinkfactor)
var thumbheight = Math.floor(largeheight/shrinkfactor)
var dragimgwidth = Math.floor(clipwidth/shrinkfactor)
var dragimgheight = Math.floor(clipheight/shrinkfactor)
var dragimgleft = thumbleft+3
var dragimgtop = thumbtop+3
var difleft= largeleft-thumbleft
var diftop= largetop-thumbtop
var clippoints
var cliptop=0
var clipbottom=cliptop+clipheight
var clipleft=0
var clipright=clipleft+clipwidth
if (parseInt(navigator.appVersion) >= 4) {
if (navigator.appName == "Netscape") {
isNav = true
} else {
isIE = true
}
}
function setZIndex(obj, zOrder) {
obj.zIndex = zOrder
}
function shiftTo(obj, x, y) {
if (isNav) {
if(x<=document.thumb.left) {x=document.thumb.left}
if(x>=(document.thumb.left+thumbwidth-dragimgwidth-2)) {x=document.thumb.left+thumbwidth-dragimgwidth-2}
if(y<=document.thumb.top) {y=document.thumb.top}
if(y>=(document.thumb.top+thumbheight-dragimgheight-2)) {y=document.thumb.top+thumbheight-dragimgheight-2}
obj.moveTo(x,y)
} else {
if(x<=document.all.thumb.style.posLeft) {x=document.all.thumb.style.posLeft}
if(x>=(document.all.thumb.style.posLeft+thumbwidth-dragimgwidth-2)) {x=document.all.thumb.style.posLeft+thumbwidth-dragimgwidth-2}
if(y<=document.all.thumb.style.posTop) {y=document.all.thumb.style.posTop}
if(y>=(document.all.thumb.style.posTop+thumbheight-dragimgheight-2)) {y=document.all.thumb.style.posTop+thumbheight-dragimgheight-2}
obj.pixelLeft = x
obj.pixelTop = y
}
cliptop = (y-thumbtop)*shrinkfactor
clipbottom = cliptop+clipheight
clipleft = (x-thumbleft)*shrinkfactor
clipright = clipleft+clipwidth
if (document.all) {
clippoints ="rect("+cliptop+" "+clipright+" "+clipbottom+" "+clipleft+")"
document.all.large.style.posTop=largetop-cliptop
document.all.large.style.posLeft=largeleft-clipleft
document.all.large.style.clip=clippoints
}
if (document.layers) {
document.large.top=largetop-cliptop
document.large.left=largeleft-clipleft
document.large.clip.left = clipleft
document.large.clip.right = clipright
document.large.clip.top = cliptop
document.large.clip.bottom = clipbottom
}
}
function setSelectedElem(evt) {
if (isNav) {
var testObj
var clickX = evt.pageX
var clickY = evt.pageY
for (var i = document.layers.length - 1; i >= 0; i--) {
testObj = document.layers[i]
if ((clickX > testObj.left) &&
(clickX < testObj.left + testObj.clip.width) &&
(clickY > testObj.top) &&
(clickY < testObj.top + testObj.clip.height && document.layers[i].id=="dragimg")) {
selectedObj = testObj
setZIndex(selectedObj, 100)
return
}
}
} else {
var imgObj = window.event.srcElement
if (imgObj.parentElement.id.indexOf("dragimg") != -1) {
selectedObj = imgObj.parentElement.style
setZIndex(selectedObj,100)
return
}
}
selectedObj = null
return
}
function dragIt(evt) {
if (selectedObj) {
if (isNav) {
shiftTo(selectedObj, (evt.pageX - offsetX), (evt.pageY - offsetY))
} else {
shiftTo(selectedObj, (window.event.clientX - offsetX), (window.event.clientY - offsetY))
return false
}
}
}
function engage(evt) {
setSelectedElem(evt)
if (selectedObj) {
if (isNav) {
offsetX = evt.pageX - selectedObj.left
offsetY = evt.pageY - selectedObj.top
} else {
offsetX = window.event.offsetX
offsetY = window.event.offsetY
}
}
return false
}
function release(evt) {
if (selectedObj) {
setZIndex(selectedObj, 0)
selectedObj = null
}
}
function setNavEventCapture() {
if (isNav) {
document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP)
}
}
function init() {
if (document.layers) {
var imageurl=document.large.document.largepic.src
largewidth=document.large.document.width
largeheight=document.large.document.height
thumbwidth = Math.floor(largewidth/shrinkfactor)
thumbheight = Math.floor(largeheight/shrinkfactor)
document.thumb.document.write("<IMG NAME='thumbpic' SRC='"+imageurl+"' width="+thumbwidth+" height="+thumbheight+">")
document.thumb.document.close()
document.dragimg.document.write("<IMG NAME='dragimgpic' border=2 SRC='../img/dragimg.gif' width="+dragimgwidth+" height="+dragimgheight+">")
document.dragimg.document.close()
document.large.left=largeleft
document.large.top=largetop
document.thumb.left=thumbleft
document.thumb.top=thumbtop
document.dragimg.left=dragimgleft
document.dragimg.top=dragimgtop
document.large.clip.left=clipleft
document.large.clip.right=clipright
document.large.clip.top=cliptop
document.large.clip.bottom=clipbottom
document.large.visibility="visible"
setNavEventCapture()
}
if (document.all) {
var imageurl=document.largepic.src
largewidth=document.all.large.offsetWidth
largeheight=document.all.large.offsetHeight
thumbwidth = Math.floor(largewidth/shrinkfactor)
thumbheight = Math.floor(largeheight/shrinkfactor)
thumb.innerHTML="<IMG NAME='thumbpic' SRC='"+imageurl+"' width="+thumbwidth+" height="+thumbheight+">"
dragimg.innerHTML="<IMG NAME='dragimgpic' border=2 SRC='../img/dragimg.gif' width="+dragimgwidth+" height="+dragimgheight+">"
document.all.large.style.posLeft=largeleft
document.all.large.style.posTop=largetop
document.all.thumb.style.posLeft=thumbleft
document.all.thumb.style.posTop=thumbtop
document.all.dragimg.style.posLeft=dragimgleft
document.all.dragimg.style.posTop=dragimgtop
clippoints ="rect("+cliptop+" "+clipright+" "+clipbottom+" "+clipleft+")"
document.all.large.style.clip=clippoints
document.all.large.style.visibility="visible"
}
document.onmousedown = engage
document.onmousemove = dragIt
document.onmouseup = release
}
window.onload=init
//-->
</SCRIPT>
<DIV style="position:absolute;visibility:hidden;" ID="large"><IMG NAME="largepic" SRC="../img/sin14.gif"></DIV>
<DIV style="position:absolute;" ID="thumb"></DIV>
<DIV style="position:absolute;" ID="dragimg"></DIV>
</body>
</html>
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