Ich war bei denen noch mal auf der seite und habe mir 
so einige Threads durchgelesen aber da mein englisch 
nicht das beste ist auch nicht alles verstanden, also habe 
ich mir mal einen Quellcode von denen rauskopiert.vielleicht 
kannste anhand dessen noch ne fehler ursache erkennen.
HTML
		
					
				<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Easily Simple Calendar Demo</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link href="calStyleDefault.css" rel="stylesheet" type="text/css">
<style type="text/css">
<!--
.style1 {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: #FF0000;
}
-->
</style>
<meta name="generator" content="Namo WebEditor v5.0(Trial)">
</head>
<body>
<div align="center">
<script language="JavaScript" type="text/JavaScript">
<!--
function popupEvent(ev,w,h) {
 var winl=(screen.width-w) / 2;
 var wint=(screen.height-h) / 2;
 win=window.open("escalEV.php?ev="+ev+"&readFile=1&readSQL=0","ESCalendar","scrollbars=yes,status=no,location=no,toolbar=no,menubar=no,directories=no,resizable=yes,width="+w+",height="+h+",top="+wint+",left="+winl+"");
 if (parseInt(navigator.appVersion) >=4) { win.window.focus();}
 }
//-->
</script>
<table class=mainTable WIDTH=175 CELLSPACING=1 CELLPADDING=0 BORDER=0>
 <tr>
 <td CLASS="monthYearText monthYearRow" colspan="7" title="Easily Simple Calendar 4.7">
 Mai 2004
 </td>
 </tr>
 <tr CLASS=dayNamesText>
 <td class=dayNamesRow WIDTH=25>S</td>
 <td class=dayNamesRow WIDTH=25>M</td>
 <td class=dayNamesRow WIDTH=25>D</td>
 <td class=dayNamesRow WIDTH=25>M</td>
 <td class=dayNamesRow WIDTH=25>D</td>
 <td class=dayNamesRow WIDTH=25>F</td>
 <td class=dayNamesRow WIDTH=25>S</td>
 </tr>
 <tr class=rows>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s2>1</td>
</tr>
 <tr class=rows>
 <td class=s2>2</td>
 <td class=s2>3</td>
 <td class=s2>4</td>
 <td class=s2>5</td>
 <td class=s2>6</td>
 <td class=s2>7</td>
 <td class=s2>8</td>
</tr>
 <tr class=rows>
 <td class=s2>9</td>
 <td class=s2>10</td>
 <td class=s2>11</td>
 <td class=s2>12</td>
 <td class="s2 today">13</td>
 <td class=s2>14</td>
 <td class=s2>15</td>
</tr>
 <tr class=rows>
 <td class=s2>16</td>
 <td class=s2>17</td>
 <td class=s2>18</td>
 <td class=s2>19</td>
 <td class=s2>20</td>
 <td class=s2>21</td>
 <td class=s2>22</td>
</tr>
 <tr class=rows>
 <td class=s2>23</td>
 <td class=s2>24</td>
 <td class=s2>25</td>
 <td class=s2>26</td>
 <td class=s2>27</td>
 <td class=s2>28</td>
 <td class=s2>29</td>
</tr>
 <tr class=rows>
 <td class=s2>30</td>
 <td class=s2>31</td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
 <td class=s20></td>
</tr>
</table>
</div>
<table width="175" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td><font face="Verdana, Arial, Helvetica, sans-serif" size="1">[url='demo.php?mo=4&yr=2004']<<[/url]</font></td>
    <td align="center"><font face="Verdana, Arial, Helvetica, sans-serif" size="1">[url='demo.php']-=-[/url]</font></td>
    <td align="right"><font face="Verdana, Arial, Helvetica, sans-serif" size="1">[url='demo.php?mo=6&yr=2004']>>[/url]</font></td>
  </tr>
</table>mfg
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