/**
 * looks for links and applies onclick to the parent
 */
var apply_links = function(options){
	$$('a.'+options.sourceclass).each(function(v,i,a){
		var parent = v.getParent();
		if ($defined(parent)) {
			parent.addEvent('click', function(){
				document.location.href=this.href;
			}.bind(v)).addClass(options.parentclass)
			if ($defined(options.hoverclass)) {
				parent.addEvent('mouseover',parent.addClass.bind(parent,options.hoverclass)).
				addEvent('mouseout',parent.removeClass.bind(parent,options.hoverclass));
			}
		}
	})
}