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程序代码如下:hm Head> <SCRIPT Language="JavaScript"> var msg="欢迎光临湖北职院计科系"; var interval=300; 0: function Scroll t en sglength; window status=msg substring(0, seq+1); se if seq >=len)i seq =0; window. setTimeout('Scro1lo; interval) </SCRIPT>/head> <body onload=Scroll"></body) </htm1>程序代码如下： <html> <head> <SCRIPT Language="JavaScript"> var msg="欢迎光临 湖北职院 计科系"; var interval = 300; seq = 0; function Scroll() { len = msg.length; window.status = msg.substring(0, seq+1); seq++; if ( seq >= len ) { seq = 0 }; window.setTimeout("Scroll();", interval ); } </SCRIPT></head> <body onload="Scroll()"></body> </html>