// JavaScript Document
function renameSync() {
	var fn = document.getElementById("uploaded_file").value;
	if (fn == ""){
		document.getElementById("file_name").value = '';
	} else {
		var filename = fn.match(/[\/|\\]([^\\\/]+)$/);
		if (filename==null)
		filename = fn; //opera...
		else
		filename = filename[1];

		document.getElementById("file_name").value = filename;
	}

	filetypeCheck();
}


function filetypeCheck() {
	var fn = document.getElementById("file_name").value;
	if (fn == ""){
		document.getElementById("allowed").className ='';
		document.getElementById("upload").disabled = true;
	} else {
		var ext = fn.split(".");
		if (ext.length==1)
		ext = '.noext.';
		else
		ext = '.' + ext[ext.length-1].toLowerCase() + '.';

		if (ALLOWED_TYPES.indexOf(ext) == -1) {
			alert('You may only upload JPG Files');
			
			document.getElementById("upload").disabled = true;
		} else {
			document.getElementById("allowed").className ='';
			document.getElementById("upload").disabled = false;
		}
	}

}


function checkchars() {
	
	
	
	
}