var ua=navigator.userAgent.toLowerCase();
var dom=(document.getElementById) ? 1 : 0;
var nn4=(document.layers) ? 1 : 0;
var ie=(((ua.indexOf('msie')!=-1) && (ua.indexOf('opera')==-1))) ? 1 : 0;
var opera=(ua.indexOf('opera')!=-1) ? 1 : 0;

function ExGetElementById(elem_id)
{
	if (dom) 	
	{		
		return document.getElementById(elem_id);
	}
	else 
	if (ie) 
	{		
		return document.all[elem_id];
	}	
  else 
  if (nn4) 
  {  	  	
  	return document.layers[elem_id];
  }	
  else
  {  	
    return document.getElementById(elem_id);
  }
}

function ajax_check()
{
	var objNum = ExGetElementById("inp_num");
		
	var objArea = ExGetElementById("check_area");
	objArea.innerHTML = '<br><center><img src="img/loading.gif" width="18" height="18" border="0"></center>';
	
	
	var params = 'order_id=' + objNum.value;
	var loader=new net.ContentLoader('./_orders/', ajax_check_reply, null, "POST", params);
	
	return true;
}

function ajax_new_check()
{
	var objArea = ExGetElementById("check_area");
  var objAreaDef = ExGetElementById("check_area_def");
	objArea.innerHTML = objAreaDef.innerHTML;
}

function ajax_check_reply()
{
	if( ! isProcessResponseOk(this.req.responseText) )
	{
		alert(this.req.responseText);
		return;
	}
	var res = getResponseText(this.req.responseText); 
	var objArea = ExGetElementById("check_area");
	objArea.innerHTML = res;
	return true;
}