$(document).ready(function() {
   $("#main_nav li").hover(
		  function(){
			var element = $(this).children()[0];
			if($(element).attr('class') != 'noSub'){$(this).addClass('sHover');}
			if(document.getElementById('sub_nav') != null) {
				if($(element).attr('class') != 'noSub') { document.getElementById('sub_nav').style.display = 'none';}
			}
		  },
		  function(){
			  //if($(element).attr('class') != 'noSub') { document.getElementById('sub_nav').style.display = 'block';}
			 if(document.getElementById('sub_nav') != null) {document.getElementById('sub_nav').style.display = 'block';}
		  	  $(this).removeClass('sHover');
	 });
   
   	 $(".navpoint").hover(
		  function(){this.src = this.src.replace("_normal","_hover");},
		  function(){this.src = this.src.replace("_hover","_normal");
	 });
	 
	 /*
	 $("#main_nav li ul li").hover(
		  function(){document.getElementById('sub_nav').style.display = 'none';},
		  function(){document.getElementById('sub_nav').style.display = 'none';}
	 });
	 */
});