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<h2>TRACKING YOUR IMAGES</h2>
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<img src="http://www.ajaxstu.com/Files/File/2007-11/24/GDIC98CEDCF94F7KI3.jpg"" alt="Winnie the pooh" title="Winnie the pooh" />
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<p>"I shall have to wait until I catch up with it," said Winnie-the-Pooh. "Now, look there." He pointed to the ground in front of him. "What do you see there?"<br />
"Tracks," said Piglet. "Paw-marks." He gave a little squeak of excitement. "Oh, Pooh! Do you think it's a--a--a Woozle?"<br />
"It may be," said Pooh. "Sometimes it is, and sometimes it isn't. You never can tell with paw- marks."<br />
With these few words he went on tracking, and Piglet, after watching him for a minute or two, ran after him. Winnie-the-Pooh had come to a sudden stop, and was bending over the tracks in a puzzled sort of way.<br />
"What's the matter?" asked Piglet.<br />
"It's a very funny thing," said Bear, "but there seem to be two animals now. This--whatever-it-was--has been joined by another--whatever-it-is--
and the two of them are now proceeding in company. Would you mind coming with me, Piglet, in case they turn out to be Hostile Animals?"<br />
Piglet scratched his ear in a nice sort of way, and said that he had nothing to do until Friday, and would be delighted to come, in case it really was a Woozle.<br />
"You mean, in case it really is two Woozles," said Winnie-the-Pooh, and Piglet said that anyhow he had nothing to do until Friday. So off they went together.</p>
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</div>
#info h3{ text-align:center;
}
#holdit {width:700px; position:relative; margin:3em auto; padding:10px; border:1px solid #ddd;}
#holdit img {position:absolute; z-index:1; top:10px; left:10px; }
#holdit p { margin:0px; position:relative; z-index:10; line-height:18px; text-align:justify; font-size:10px; font-family:verdana, arial, sans-serif}
#holdit em {display:block; float:left; height:18px; clear:left; overflow:hidden; }
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首先将包容对象#holdit设置成相对定位(确保等下的img绝对定位以它左上角为原点)
接着把#holdit里面的img设成绝对定位且z-index高度为1，这样img就脱离文档流了
将em标签设置左浮动，高度和p的ling-height要一样，再根据图片的图案分别设置每个em的宽度(记得要用clear来清除浮动)
最后把P设置成相对定位且z-index高度设置大于img的数值
其实我们也可以直接将图片作为为#holdit的背景，这样就不需要专门为img来设置CSS了
以上第一个方法.