图片太大,拖动显示图片 全图
<html><body><div style="width:500;height:500;overflow:hidden;cursor:hand;border-width:1px;border-color:Black" id="demo"> <img src="TERRA_2008_03_16_02_38_GZ_cut.MOD02HKM_PRJ.jpg"></div> 
<script>
function demo.onmousedown()
{ 
demo.setCapture(); demo.initX=event.clientX; demo.initY=event.clientY; 
} function demo.onmousemove() { if(event.button==1) { demo.scrollLeft+=demo.initX-event.clientX; demo.scrollTop+=demo.initY-event.clientY; demo.initX=event.clientX; demo.initY=event.clientY; } } function demo.onmouseup() { demo.releaseCapture(); 
} </script></body></html>