Tienes toda la razon, el problema era numerar los eventos "onMouseOver" y "onMouseOut", o llamarlos de diferente forma. Thanks!!!
Ahi les dejo este util javascript para link de publicidad, por eso aportar scripts y compartir en el foro, saludos!!!
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<html>
<head>
<body bgcolor="black">
<br>
<br>
<br>
<br>
<center>
<a href="http://www.playstation.com" target="_blank"
onMouseOver="document.the_image1.src='http://www.tonamelt.com/Publicidad/playstation-go.GIF';"
onMouseOut="document.the_image1.src='http://www.tonamelt.com/Publicidad/playstation.gif';">
<img src="http://www.tonamelt.com/Publicidad/playstation.gif" name="the_image1" border="0" hspace="4" vspace="4">
</center>
<br>
<br>
<br>
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<center>
<a href="http://www.cinepolis.com.mx" target="_blank"
onMouseOver="document.the_image2.src='http://www.tonamelt.com/Publicidad/cineapolis-go.GIF';"
onMouseOut="document.the_image2.src='http://www.tonamelt.com/Publicidad/cinepolis.gif';">
<img src="http://www.tonamelt.com/Publicidad/cinepolis.gif" name="the_image2" border="0" hspace="4" vspace="4">
</center>
<br>
<br>
<br>
<br>
<center>
<a href="http://www.latin.aiwa.com/mx/" target="_blank"
onMouseOver="document.the_image3.src='http://www.tonamelt.com/Publicidad/aiwa-go.GIF';"
onMouseOut="document.the_image3.src='http://www.tonamelt.com/Publicidad/aiwa.gif';">
<img src="http://www.tonamelt.com/Publicidad/aiwa.gif" name="the_image3" border="0" hspace="4" vspace="4">
</center>
<br>
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<center>
<a href="http://www.motorola.com/mx" target="_blank"
onMouseOver="document.the_image4.src='http://www.tonamelt.com/Publicidad/motorola-go.GIF';"
onMouseOut="document.the_image4.src='http://www.tonamelt.com/Publicidad/motorola.gif';">
<img src="http://www.tonamelt.com/Publicidad/motorola.gif" name="the_image4" border="0" hspace="4" vspace="4">
</center>
<br>
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<center>
<a href="http://www.mixup.com.mx/mixup/" target="_blank"
onMouseOver="document.the_image5.src='http://www.tonamelt.com/Publicidad/mixup-go.GIF';"
onMouseOut="document.the_image5.src='http://www.tonamelt.com/Publicidad/mixup.JPG';">
<img src="http://www.tonamelt.com/Publicidad/mixup.JPG" name="the_image5" border="0" hspace="4" vspace="4">
</center>
<br>
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</body>
</html>