Line 35, Column 50: character "<" is the first character of a delimiter but occurred as data
if(document.getElementById(activo).offsetWidth < 20){
This message may appear in several cases:
You tried to include the "<" character in your page: you should escape it as "<"
You used an unescaped ampersand "&": this may be valid in some contexts, but it is recommended to use "&", which is always safe.
Another possibility is that you forgot to close quotes in a previous tag.
tengo el jaavscript incluido en la pagina de este modo
Código Javascript
:
Ver original<script type="text/javascript">
</script>
acaso pide que este vinculado en una pagina externa? o directamente estoy haciendo algo mal