// CheckUsername takes parameter username and password from the user and checks if he is a
function checkUsername(username, password) {
    if (username == "" && password == "") {
        window.alert("Please enter your Username & Password");
    } else if (username == "") {
        window.alert("Please enter your Username");
    } else if (password == "") {
        window.alert("Please enter your Password");
    } else {
        Ext.Ajax.request({
            url: 'database.php',
            params: {
                functionID: 1,
        		uname: username,
        		pass: password
            },
            success: function (response, opts) {
                var checked =   Ext.util.JSON.decode(response.responseText);
                if(checked == true)
                	{
                		window.location = "index.html";
                	}
                else
                	{
                		alert("Unsuccessful")
                	}
            }
        });

    }
}


function showUserName(username)
{
	var name;
	Ext.Ajax.request({
        url: 'database.php',
        params: {
            functionID: 2,
    		uname: username
        },
        success: function (response, opts) {
            name =  response.responseText;
            Ext.getCmp('fieldset_index').setTitle("Hello Professor "+name);
        }
    });
}