function get_aleatory(value){
	aleat_length=value;
	aleat=Math.random()*aleat_length;
	aleat = Math.floor(aleat);
	return aleat;
}


function load_image(receptor,image,callback){
	$(receptor).attr('src', image);
	
	$(function () { 
		$(receptor).bind('load',function(){
			$(receptor).unbind('load');
			if(callback.indexOf('(')!=-1){
				callback=callback;
			}
			else{
				callback=callback +'()';
			}
			eval(callback);
			}).error(function () {
        }).attr('src', image);
	 });
}