/**
 * @author Alexander Farkas
 * v. 1.02
 */
(function($) {
	$.extend($.fx.step,{
	    backgroundPosition: function(fx) {
            if (fx.state === 0 && typeof fx.end == 'string') {
                var start = $.curCSS(fx.elem,'backgroundPosition');
                start = toArray(start);
                fx.start = [start[0],start[2]];
                var end = toArray(fx.end);
                fx.end = [end[0],end[2]];
                fx.unit = [end[1],end[3]];
			}
            var nowPosX = [];
            nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
            nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];
            fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];

           function toArray(strg){
               strg = strg.replace(/left|top/g,'0px');
               strg = strg.replace(/right|bottom/g,'100%');
               strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
               var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
               return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
           }
        }
	});
})(jQuery);


function mainmenu(){
	$(" #nav ul ").css({display: "none"}); // Opera Fix

	$(" #nav li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).slideDown("normal");
	},function(){
		/*$(this).find('ul:first').fadeOut("fast",function(){*/
			$(this).find('ul:first').css({visibility: "hidden"});													 
		/*});*/
	});
	
	
}

$(function(){
	$('#nav li a')
		.css( {backgroundPosition: "-20px 35px"} )
		.mouseover(function(){
			if($(this).attr("class")!="activo")
			$(this).stop().animate({backgroundPosition:"(-20px 94px)"}, {duration:500})
		})
		.mouseout(function(){
			if($(this).attr("class")!="activo")
				$(this).stop().animate({backgroundPosition:"(40px 35px)"}, {duration:200, complete:function(){
					$(this).css({backgroundPosition: "-20px 35px"})
				}})
		})
		.click(function(){
			for(i=0;i<$("#nav li a").length;i++){
			$($("#nav li a")[i]).removeClass("activo");
			$($("#nav li a")[i]).css({backgroundPosition: "-20px 35px"})
			}
			$(this).css({backgroundPosition: "-20px 94px"});
			$(this).addClass("activo");
			var la_url=$(this).attr("href");
			var pagina_actual=$("#mi_iframe").attr("src");
			if(la_url.indexOf("www.prensa.ifema.es/I")!=-1)
				$("#mi_iframe").css("overflow-y","auto");						
			else if(pagina_actual.indexOf("www.prensa.ifema.es/I")!=-1){
				$("#mi_iframe").css("overflow-y","hidden");	
			}
		})
});
 
 /*$(document).ready(function(){					
	mainmenu();
});*/