//Inicializar página (en el array ready_callbacks se pueden aplicar callbacks)
$(function() {
	//Ejecutar callbacks pendientes
	for (var i=0; i<ready_callbacks.length; i++) {
		//try {
			ready_callbacks[i]();
		//} catch(ex) {
		//}
	}
});

function filterImages(){
  if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){
  	var ieversion=new Number(RegExp.$1);
  	if (ieversion>=6){
			var blank = new Image();
			blank.src = '/css/img/blank.gif';

  		$("img.img_filter").each(function(){
				 // get src
				 var png = this;
			   var src = png.src;
			   // set width and height
			   if (!png.style.width) { png.style.width = $(png).width(); }
			   if (!png.style.height) { png.style.height = $(png).height(); }
			   // replace by blank image
			   png.src = blank.src;
			   // set filter (display original image)
			   png.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='scale')";
			});
		}
 	}
}
ready_callbacks.push(filterImages);