var FileHelper = {

	getName : function (fpath)
	{
		if(fpath == null || fpath == "")
			return "";
		if (fpath.indexOf("/") == -1) // windows
			return fpath.substring(fpath.lastIndexOf("\\")*1+1);
		else
			return fpath.substring(fpath.lastIndexOf("/")*1+1);
	},
	getShortName : function (fname)
	{
		if(fname == null || fname == "")
			return "";
		return fname.substring(0,fname.lastIndexOf("."));
	},
	getExtName : function (fname)
	{
		if(fname == null || fname == "")
			return "";
		return fname.substring(fname.lastIndexOf(".")+1).toLowerCase();
	},
	getDir : function (filePath) {
		if (filePath.indexOf("/") == -1) { // windows
			return filePath.substring(0, filePath.lastIndexOf('\\'));
		}
		else { // unix
			return filePath.substring(0, filePath.lastIndexOf('/'));
		}
	},

	isFileExt : function (fname,exts)
	{

		if(!fname)
			return false;
		var ext = this.getExtName(fname);
		return $.inArray(ext, exts);

	},
	isPicture : function (fname)
	{
		var exts = ["png","jpg","jpeg","gif","bmp"];
		return this.isFileExt(fname,exts);
	},
	isVoice : function (fname)
	{
		var exts = ["amr","mp3","wav"];
		return this.isFileExt(fname,exts);
	},
	isVideo : function (fname)
	{
		var exts = ["avi","dat","flv","m4v","mkv","mov","mp4","mpeg","mpg","ogg","ogv","rm","rmvb","ts","vob","webmv","wmv"];
		return this.isFileExt(fname,exts);
	},
	isFlash : function (fname)
	{
		var exts = ["swf"];
		return this.isFileExt(fname,exts);
	},
	isSvg : function (fname)
	{
		var exts = ["svg","svgz"];
		return this.isFileExt(fname,exts);
	},
	isHtml : function (fname)
	{
		var exts = ["html","htm"];
		return this.isFileExt(fname,exts);
	},
	isText : function (fname)
	{
		var  exts = ["txt"];
		return this.isFileExt(fname,exts);
	},
	isPdf : function (fname)
	{
		var  exts = ["pdf"];
		return this.isFileExt(fname,exts);
	},
	isXml : function (fname)
	{
		var exts = ["xml"];
		return this.isFileExt(fname,exts);
	},
	isZip : function (fname)
	{
		var exts = ["zip"];
		return this.isFileExt(fname,exts);
	},
	isKisc : function (fname)
	{
		var exts = ["kisc"];
		return this.isFileExt(fname,exts);
	}
};