function applyDisplayOptions(t) {

    var f = document.forms.f;
    var t = f.course;

    var c = t.options[t.selectedIndex].value;
    var cAlias = 'c_'+c;

    $$('div.c_option').setStyle('display','none');
    $$('div.c_option input').value = '';
    
    var options = $$('div.'+cAlias);
    options.setStyle('display','block'); 

    filmidea_len();   
    
}


function filmidea_len() {
    var maxlen = 3000;
    var t = document.getElementById('filmidea');
    if(t.value.length >= maxlen) {
        t.value = t.value.substring(0,maxlen);
    }
    var c = document.getElementById('filmidea_chrscount');
    c.innerHTML = t.value.length;
}


/*
 
Correctly handle PNG transparency in Win IE 5.5 & 6.
http://homepage.ntlworld.com/bobosola. Updated 18-Jan-2006.

Use in <HEAD> with DEFER keyword wrapped in conditional comments:
<!--[if lt IE 7]>
<script defer type="text/javascript" src="pngfix.js"></script>
<![endif]-->

*/
window.onload = function() {
    var arVersion = navigator.appVersion.split("MSIE")
    var version = parseFloat(arVersion[1])


    if ((version >= 5.5) && (document.body.filters))  {
       for(var i=0; i<document.images.length; i++) {
          var img = document.images[i]
          var imgName = img.src.toUpperCase()
          if (imgName.substring(imgName.length-3, imgName.length) == "PNG") {
             var imgID = (img.id) ? "id='" + img.id + "' " : ""
             var imgClass = (img.className) ? "class='" + img.className + "' " : ""
             var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
             var imgStyle = "display:inline-block;" + img.style.cssText 
             if (img.align == "left") imgStyle = "float:left;" + imgStyle
             if (img.align == "right") imgStyle = "float:right;" + imgStyle
             if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
             var strNewHTML = "<span " + imgID + imgClass + imgTitle
             + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
             + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
             + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
             img.outerHTML = strNewHTML
             i = i-1
          }
       }
    }
}

