// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults

function preview(fi_node){
	if(!fi_node)
		return;
	if(!fi_node.value){
		alert("Devi prima selezionare un file");
		return;
	}
	var url;
	if(fi_node.files){
		url = fi_node.files[0].getAsDataURL();
	}else{
		url = "file://" + fi_node.value;
	}
	window.open(url);
}