会自动逐行上升的文本框

<HTML><HEAD><META http-equiv='Content-Type' content='text/html; charset=gb2312'><TITLE>会自动逐行上升的文本框</TITLE> <SCRIPT LANGUAGE="JavaScript"></script> </HEAD><BODY OnLoad="selectScroller(0);"> <center><form name="scrollform"><select name="scroller" size=8><option><option><option><option><option><option><option><option><option>This select option list will<option>scroll text by copying<option>the top line to the bottom<option>line before deleting the<option>top line. This moves the<option>options up one line and<option>gives the impression of<option>scrolling.<option><option>You can leave as many<option>blank lines as you feel<option>necessary to give the<option>look of begining and<option>ending.<option><option>This script was written<option>in response to those<option>who wanted a news<option>scroller to work within<option>a table's cell and for<option>those who want old<option>browsers to also see<option>a scoller on the page.<option><option></select></form></center> </BODY></HTML>

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　　图片按比例缩放函数

以下是程序代码： <script language="JavaScript"><!--//图片按比例缩放var flag=false;function DrawImage(ImgD,iwidth,iheight){ //参数(图片,允许的宽度,允许的高度) var image=new Image(); image.sr>>>详细阅读

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