var Url = {

    // public method for url encoding
    encode : function (string) {
        return escape(this._utf8_encode(string));
    },

    // public method for url decoding
    decode : function (string) {
        return this._utf8_decode(unescape(string));
    },

    // private method for UTF-8 encoding
    _utf8_encode : function (string) {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) {

            var c = string.charCodeAt(n);

            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    },

    // private method for UTF-8 decoding
    _utf8_decode : function (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }

}

function resetDialog(){
	$("#nameTextBox").val("");
	$("#companyNameTextBox").val("");
	$("#emailTextBox").val("");
	$("#phoneTextBox").val("");
	$("#commentsTextBox").val("");
	$("#nameError").html("");
	$("#companyError").html("");
	$("#emailError").html("");
	
	$("#contactSalesForm").css("display","block");
	$("#confirmation").css("display","none");
}

function closeDialog(){
	$("#contactSalesDialog").dialog("close");
}

function isValid(){
	var username = $("#nameTextBox").val();
	var company = $("#companyNameTextBox").val();
	var email = $("#emailTextBox").val();
	var phone = $("#phoneTextBox").val();
	var comments = $("#commentsTextBox").val();

	var windowHeight = 350;
	var valid = true;

	if(username == ''){
		valid = false;
		windowHeight += 12;
		$("#nameError").html("This field is required");
	}

	if(company == ''){
		valid = false;
		windowHeight += 12;
		$("#companyError").html("This field is required");
	}

	if(email == ''){
		valid = false;
		windowHeight += 12;
		$("#emailError").html("This field is required");
	}
	
	$("#contactSalesDialog").data("height.dialog", windowHeight);
	
	return valid;
}