var httpObj;
var m_NameOfFunctionToDoAfterAjaxFinish;
var m_FunctionSignature;
function callAjax(PageName,QueryStringParameters,NameOfFunctionToDoAfterAjaxFinish,FunctionSignature,NameOfFunctionToDoBeforeAjaxFinish,BeforeFunctionSignature,ParameterNameToSetValueTo)
{
    
    if (NameOfFunctionToDoBeforeAjaxFinish != null && BeforeFunctionSignature != null && ParameterNameToSetValueTo != null)
    {
        var ParameterValue;
        var m_BeforeFunctionSignature;
        if (NameOfFunctionToDoBeforeAjaxFinish != null && BeforeFunctionSignature != null)
                {
                    
                    m_BeforeFunctionSignature = "'" + BeforeFunctionSignature + "'";
                    var BeforeEvalString = NameOfFunctionToDoBeforeAjaxFinish + '(' + m_BeforeFunctionSignature + ')'
                    //alert(BeforeEvalString);
                    ParameterValue = eval(BeforeEvalString);
                }
                
        
        var IndexOfParameter = QueryStringParameters.indexOf(ParameterNameToSetValueTo);
        
        if (!isNaN(ParameterValue))
        {
            QueryStringParameters = QueryStringParameters.substr(0,IndexOfParameter+ParameterNameToSetValueTo.length) +"="+ParameterValue + QueryStringParameters.substr(IndexOfParameter+ParameterNameToSetValueTo.length+2,QueryStringParameters.length);
        }
        else
        {
            QueryStringParameters = QueryStringParameters.substr(0,IndexOfParameter+ParameterNameToSetValueTo.length) +"="+ParameterValue + QueryStringParameters.substr(IndexOfParameter+ParameterNameToSetValueTo.length+1,QueryStringParameters.length);
        }        
    }
    m_NameOfFunctionToDoAfterAjaxFinish = NameOfFunctionToDoAfterAjaxFinish;
    m_FunctionSignature = FunctionSignature;
    var url = "http://www.mutualart.com/MutualArt/AjaxPages/" + PageName + "?Rand=" + Math.random()+"&"+ QueryStringParameters;
    
    var bbb = new Ajax.Request(url,   
    {     
        method:'get',     
        onSuccess: function(transport)
        {
            if (m_NameOfFunctionToDoAfterAjaxFinish != null && m_FunctionSignature != null)
            {
                m_FunctionSignature = "'" + m_FunctionSignature + "'";
                var evalString = m_NameOfFunctionToDoAfterAjaxFinish + '(' + m_FunctionSignature + ')'
                
                eval(evalString);
            }
        },     
        onFailure: function()
        {
            var args = arguments.length
        }
        
        
      }
     
     ); 
}