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JS网页图片查看器(兼容IE、FF)可控制图片放大缩小移动

2008-11-17 16:22:05 作者：

这是一个网上比较常用的JS网页图片查看器，可控制图片放大、缩小、还原、移动位置、拖动等操作，并且兼容IE浏览器和FF火狐浏览器，可以用在图片网站、地图网站等

修正了网上其它版本的一些错误。完美无错版

<html> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<title>JS网页图片查看器－可控制图片放大缩小还原移动效果</title> 
<META HTTP-EQUIV="imagetoolbar" CONTENT="no"> 
<style type="text/css"> 
body { font-family: "Verdana", "Arial", "Helvetica", "sans-serif"; font-size: 12px; line-height: 180%; } 
td { font-size: 12px; line-height: 150%; } 
</style> 
<SCRIPT language=JavaScript> 
drag = 0 
move = 0

// 拖拽对象 
// 参见：http://blog.sina.com.cn/u/4702ecbe010007pe 
var ie=document.all; 
var nn6=document.getElementById&&!document.all; 
var isdrag=false; 
var y,x; 
var oDragObj;

function moveMouse(e) { 
if (isdrag) { 
oDragObj.style.top = (nn6 ? nTY + e.clientY - y : nTY + event.clientY - y)+"px"; 
oDragObj.style.left = (nn6 ? nTX + e.clientX - x : nTX + event.clientX - x)+"px"; 
return false; 
} 
}

}

function smallit(){ 
var height1=images1.height; 
var width1=images1.width; 
images1.height=height1/1.2; 
images1.width=width1/1.2; 
}

function bigit(){ 
var height1=images1.height; 
var width1=images1.width; 
images1.height=height1*1.2; 
images1.width=width1*1.2; 
} 
function realsize() 
{ 
images1.height=images2.height; 
images1.width=images2.width; 
block1.style.left = 0; 
block1.style.top = 0;

} 
function featsize() 
{ 
var width1=images2.width; 
var height1=images2.height; 
var width2=360; 
var height2=200; 
var h=height1/height2; 
var w=width1/width2; 
if(height1<height2&&width1<width2) 
{ 
images1.height=height1; 
images1.width=width1; 
} 
else 
{ 
if(h>w) 
{ 
images1.height=height2; 
images1.width=width1*height2/height1; 
} 
else 
{ 
images1.width=width2; 
images1.height=height1*width2/width1; 
} 
} 
block1.style.left = 0; 
block1.style.top = 0; 
}

</SCRIPT> 
<script language="JavaScript" type="text/JavaScript"> 
 
</script> 
<style type="text/css"> 
 
</style> 
</head> 
<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" oncontextmenu="return false" ondragstart="return false" onselectstart ="return false" onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="return false" onmouseup="document.selection.empty()" style="overflow-y:hidden;overflow-x:hidden;"> 
<div id="Layer1"> 
<table border="0" cellspacing="2" cellpadding="0"> 
<tr> 
<td>&nbsp;</td> 
<td><img src="http://img.jb51.net/images/map/up.gif" width="20" height="20" style="cursor:hand" onClick="clickMove('up')" title="向上"></td> 
<td>&nbsp;</td> 
</tr> 
<tr> 
<td><img src="http://img.jb51.net/images/map/left.gif" width="20" height="20" style="cursor:hand" onClick="clickMove('left')" title="向左"></td> 
<td><img src="http://img.jb51.net/images/map/zoom.gif" width="20" height="20" style="cursor:hand" onClick="realsize();" title="还原"></td> 
<td><img src="http://img.jb51.net/images/map/right.gif" width="20" height="20" style="cursor:hand" onClick="clickMove('right')" title="向右"></td> 
</tr> 
<tr> 
<td>&nbsp;</td> 
<td><img src="http://img.jb51.net/images/map/down.gif" width="20" height="20" style="cursor:hand" onClick="clickMove('down')" title="向下"></td> 
<td>&nbsp;</td> 
</tr> 
<tr> 
<td>&nbsp;</td> 
<td><img src="http://img.jb51.net/images/map/zoom_in.gif" width="20" height="20" style="cursor:hand" onClick="bigit();" title="放大"></td> 
<td>&nbsp;</td> 
</tr> 
<tr> 
<td>&nbsp;</td> 
<td><img src="http://img.jb51.net/images/map/zoom_out.gif" width="20" height="20" style="cursor:hand" onClick="smallit();" title="缩小"></td> 
<td>&nbsp;</td> 
</tr> 
</table> 
</div> 
<p>
 
<div id='hiddenPic' style='position:absolute; left:0px; top:0px; width:0px; height:0px; z-index:1; visibility: hidden;'><img name='images2' src='http://img.jb51.net/images/map/760-480bsx.jpg' border='0'></div> 
<div id='block1' onmouseout='drag=0' onmouseover='dragObj=block1; drag=1;' style='z-index:10; height: 0; left: 0px; position: absolute; top: 0px; width: 0' class="dragAble"> <img name='images1' src='http://img.jb51.net/images/map/760-480bsx.jpg' border='0'></div> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

JS网页图片查看器(兼容IE、FF)可控制图片放大缩小移动

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