function rollOver(element) {
	    //change the colour
    	element.className += (element.className?' ':'') + 'CSStoHighlight';
	    //change display of child
    	for( var x = 0; element.childNodes[x]; x++ ){
	    	if( element.childNodes[x].tagName == 'UL' ) { element.childNodes[x].className += (element.childNodes[x].className?' ':'') + 'CSStoShow'; }
    		if( element.childNodes[x].tagName == 'A' ) { element.childNodes[x].className += (element.childNodes[x].className?' ':'') + 'CSStoHighLink'; }
	    }
    }

    function rollOff(element) {
	    //change the colour
    	element.className = element.className.replace(/ ?CSStoHighlight$/,'');
	    //change display of child
    	for( var x = 0; element.childNodes[x]; x++ ){
	    	if( element.childNodes[x].tagName == 'UL' ) { element.childNodes[x].className = element.childNodes[x].className.replace(/ ?CSStoShow$/,''); }
    		if( element.childNodes[x].tagName == 'A' ) { element.childNodes[x].className = element.childNodes[x].className.replace(/ ?CSStoHighLink$/,''); }
	    }
    }