function checkinput(){
        if(document.getElementById('fSearch').value == 'Từ khóa tìm kiếm'){
            document.getElementById('fSearch').value = '';
        }
    }
    function checkblur(){
        if(document.getElementById('fSearch').value == ''){
            document.getElementById('fSearch').value = 'Từ khóa tìm kiếm';
        }
    }
    function select_all(){                                           
        document.getElementById('fSearch').focus();
        document.getElementById('fSearch').select();
    }
    function searchcontent(){
        if (document.getElementById("fSearch").value != "" && document.getElementById("fSearch").value != "Từ khóa tìm kiếm"){
            window.location = "http://chaobuoisang.net/search.php?keyword=" + EncodeURL(document.getElementById("fSearch").value);
        }
    }
    function enterHere(e){   
        var code = e.keyCode;
        if(code == 13)        
            searchcontent();
    }
	function check_facebook_status(id,id2){
            var pic = document.getElementById(id);
			var des = document.getElementById(id2);
			if(pic.height>0){
				des.style.display = 'block';
				return true;
			}
			else{
                des.style.display = 'none';
                return false;
            }
	}
function EncodeURL(string){
	string = string.replace(' ','%20');
	string = string.replace('#','%23');
	string = string.replace('$','%24');
	string = string.replace('&','%26');
	string = string.replace('`','%60');
	string = string.replace(':','%3A');
	string = string.replace('<','%3C');
	string = string.replace('>','%3E');
	string = string.replace('[','%5B');
	string = string.replace(']','%5D');
	string = string.replace('{','%7B');
	string = string.replace('}','%7D');
	string = string.replace('"','%22');
	string = string.replace('@','%40');
	string = string.replace('/','%2F');
	string = string.replace(';','%3B');
	string = string.replace('=','%3D');
	string = string.replace('?','%3F');
	string = string.replace('\\','%5C');
	string = string.replace('^','%5E');
	string = string.replace('|','%7C');
	string = string.replace('~','%7E');
	string = string.replace('\'','%27');
	string = string.replace(',','%2C');
	string = string.replace('+','%2B');
	return string;
}