function nav_hover( ) {
	var nav_items = document.getElementById( "nav" ).getElementsByTagName( "li" );
   var sub_nav_items ;
	for (var itor = 0; itor < nav_items.length; itor++) {
		nav_items[itor].onmouseover = function( ) {
         if( this.className != "" ) {
            this.className += " hover";
         } else {
			   this.className = "hover";
         }
			if ( this.parent != null ) {
            if( this.parent.className != "" ) {
               this.parent.className += " hover";
            } else {
               this.parent.className = "hover";
            }
         }
      }
		nav_items[itor].onmouseout = function( ) {
         if( this.className != "hover" ) {
            this.className = this.className.substr( 0, this.className.length - 5);
         } else {
			   this.className = "";
         }
      }
	}
}

var preloaded = new Array();
function preload_images( ) {
   for(var i = 0; i < arguments.length; i++){
      preloaded[i] = document.createElement('img');
      preloaded[i].setAttribute('src',arguments[i]);
   }
}

preload_images(
   '/favicon.ico',
   '/img/layout/nav_bg_over.jpg',
   '/img/layout/nav_dropdown_bg.jpg',
   '/img/layout/nav_dropdown_bg_over.jpg',
   '/portfolio/img/icon/adrianthompson.jpg',
   '/portfolio/img/icon/artfulchange.jpg',
   '/portfolio/img/icon/bigalpha.jpg',
   '/portfolio/img/icon/idpr.jpg',
   '/portfolio/img/icon/marcjosef.jpg',
   '/portfolio/img/icon/pacificbaymasonry.jpg',
   '/portfolio/img/icon/supplewine.jpg',
   '/portfolio/img/icon/table21films.jpg'
   '/portfolio/img/icon/interviewedge.jpg'
);