模仿MSN消息提示的效果

                <SCRIPT>
                    var oPopup = window.createPopup();
                    var popTop=50;
                    
                    function popmsg(msgstr){
                    var winstr="<table style=\"border: 1 solid  #FFA6CA\"  width=\"241\" height=\"172\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"  background=\"http://www.blueidea.com/articleimg/2004/01/1576/04-s.jpg\" >";
                    winstr+="<tr><td height=\"30\"> </td></tr><tr><td align=\"center\"><table width=\"90%\" height=\"110\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">";
                    winstr+="<tr><td valign=\"top\" style=\"font-size:12px; color: red; face: Tahoma\">"+msgstr+"</td></tr></table></td></tr></table>";
                    oPopup.document.body.innerHTML = winstr;
                    popshow();
                    }
                    
                    function popshow(){
                    window.status=popTop;
                    if(popTop>1720){
                    clearTimeout(mytime);
                    oPopup.hide();
                    return;                    
                    }else if(popTop<=180){
                    oPopup.show(screen.width-250,screen.height,241,popTop);
                    }else if(popTop<=220){
                    oPopup.show(screen.width-250,screen.height-popTop,241,172);                    
                    }else if(popTop>1500&&popTop<=1540){
                    oPopup.show(screen.width-250,screen.height+(popTop-1720),241,172);
                    }else if(popTop>1540&&popTop<=1720){
                    oPopup.show(screen.width-250,screen.height,241,1720-popTop);
                    }else{
                    oPopup.show(screen.width-250,screen.height-220,241,172);
                    }                            
                    popTop+=1;
                    var mytime=setTimeout("popshow();",50);
                    }
                    
                    popmsg("<img border=\"0\" src=\"http://www.blueidea.com/img/common/logo.gif\" width=\"90\" height=\"27\">欢迎光临蓝色理想，大量的设计资源等着你!有什么问题可以到经典论坛提出。");                    
                </SCRIPT>