var TWX_CallPHPFunctionUrl;

function TWX_CallPHPFunctionSet(cphp_url)
{
   TWX_CallPHPFunctionUrl = cphp_url;    
   document.write('<form id="twx_form_submit" method="post" action="" onsubmit="submitFun(this)" class="form_submit"></form>');
}
 
function TWX_CallPHPFunction(FunctionName, Args)
{
	// In the varArray are all the variables you want to give with the function
	//var varArray = new Array();
	//varArray[0] = "var1";
	//varArray[1] = "var2";
   
	// the url which you have to reload is this page, but you add an action to the GET- or POST-variable
	var url = TWX_CallPHPFunctionUrl + "?action=" + FunctionName + "&args=" + Args;
  alert(url);

  var form = document.getElementById("twx_form_submit");
  form.action = url;
  form.submit();   
}