| Roaming between the network, you will find that the Internet is not only the ocean of information, but also the sea of advertising. In addition to the ordinary GIF Banner, flash, floating advertising is the current online more popular form of advertising. When you drag the browser's scroll bar, the ad that floats on the page can be moved along with the screen. Although this effect is quite useful for advertising display, for those browsing your Web site, it is an impediment to reading and an interest in reading, so it must not be abused. However, if you can make good use of it, it can play a great role. To make the effect of floating ads is not difficult, if you have the basis of JavaScript can write their own, if the ligatures are not bothered to write, to download a special effects tool on the web, press the hint to paste the code on OK. However, to really understand how it is done, you need to master some JavaScript knowledge. Here to introduce a simple floating advertising practice. The following code can be placed between <body></body>, during which I added some comments (i.e. "//" after text and "<!-" "-->"). <script For=window event=onload language= "JavaScript" > Initad ()//load page, call function Initad () </SCRIPT> <script language= "JavaScript" > <!-- function Initad () { Document.all.AdLayer.style.posTop =-200; Set the OnLoad event excitation, the ad layer relative to the fixed y direction position document.all.AdLayer.style.visibility = ' visible '//Set layer to visible Movelayer (' Adlayer ');//Call Function Movelayer () } function Movelayer (layername) { var x = 30;//Floating ad layer fixed to the position of the browser in the x direction var y = 10;//floating AD layer fixed to the Y-direction position of the browser var diff = (document.body.scrollTop + y-document.all.adlayer.style.postop) *.40; var y = document.body.scrollTop + Y-diff; Eval ("document.all." + LayerName + ". Style.postop = y"); Eval ("document.all." + LayerName + ". Style.posleft = x");/mobile AD layer SetTimeout ("Movelayer (' Adlayer ');", 20);//Set 20 milliseconds before calling function Movelayer () } --> </script> <!--below is a layer with an ID of adlayer (for example, the ID name is not adlayer, The Adlayer in Movelayer () is also modified accordingly, including a picture with a link--> <div id=adlayer style= ' Position:absolute; width:61px; height:59px; z-index:20; Visibility:hidden;; left:600px; top:300px ' > <a href= "Http://www.5dmedia.com/bbs" ></a> </div> Here, you can set the value of x and Y to set the position of the fixed layer, and change the settimeout ("Movelayer (' Adlayer ');", 20) to the time interval that you want to invoke Movelayer (). It is also important to note that the best picture is a GIF with a transparent background, so that the background color of the picture does not cover the content behind it. Remember, be cautious with floating ads, consider the use of special effects at the same time, must take into account the viewer's feelings, can not abuse Oh! |
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