String.prototype.stripViet=function()
{
	var stripped_str=this;
	var viet=[];
	i=0;
	viet[i++]=new Array('a',"/á|à|ả|ã|ạ|ă|ắ|ằ|ẳ|ẵ|ặ|â|ấ|ầ|ẩ|ẫ|ậ/g");
	viet[i++]=new Array('o',"/ó|ò|ỏ|õ|ọ|ơ|ớ|ờ|ở|ỡ|ợ|ô|ố|ồ|ổ|ỗ|ộ/g");
	viet[i++]=new Array('e',"/é|è|ẻ|ẽ|ẹ|ê|ế|ề|ể|ễ|ệ/g");
	viet[i++]=new Array('u',"/ú|ù|ủ|ũ|ụ|ư|ứ|ừ|ử|ữ|ự/g");
	viet[i++]=new Array('i',"/í|ì|ỉ|ĩ|ị/g");
	viet[i++]=new Array('y',"/ý|ỳ|ỷ|ỹ|ỵ/g");
	viet[i++]=new Array('d',"/đ/g");
	for(var i=0;i<viet.length;i++)
	{
		stripped_str=stripped_str.replace(eval(viet[i][1]),viet[i][0]);
		stripped_str=stripped_str.replace(eval(viet[i][1].toUpperCase().replace('G','g')),viet[i][0].toUpperCase())
	}
	return stripped_str.replace(/\s/g,' ')
};
document.onload = replaceVietChar();
function replaceVietChar()
{
	var arrCatTitle = document.getElementsByName('catlink');
	var CatTitle = '';

	if(typeof(arrCatTitle[0]) != 'undefined')
	{
		for(var i=0; i<=arrCatTitle.length; i++)
		{
			if(typeof(arrCatTitle[i]) != 'undefined')
			{
				arrCatTitle[i].href = decodeURI(arrCatTitle[i].href).stripViet();
			}
		}
	}
}