function pausecomp(millis)
{
var date = new Date();
var curDate = null;

do { curDate = new Date(); } 
while(curDate-date < millis);
}


function createREQ() {
                             try {
                                 req = new XMLHttpRequest();
                                 }catch(err1) {
                                              try {
                                                  req = new ActiveXObject("Msxml2.XMLHTTP");
                                                  }catch(err2) {
                                                               try {
                                                                   req = new ActiveXObject("Microsoft.XMLHTTP");
                                                                   }catch (err3) {
                                                                                 req = false;
                                                                                 }
                                                                   }
                                                  }
                                 return req;

                                 }



function requestGET(url, query, req) {

                                     myRand = parseInt(Math.random()*999999999);
                                     req.open("GET", url+'?'+query+'&rand='+myRand, true);
                                     req.send(null);

                                     }


function requestPOST(url, query, req) {

                                     req.open("POST", url, true);
                                     req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                                     req.send(query);

                                     }


function doCallback(callback,item) {
  
  eval(callback + '(item)');
  
}


function doAjax(url,query,callback,reqtype,getxml) {
  
                                                   waitvar = 'empty';
  
                                                   var myreq = createREQ();
  

                                                   myreq.onreadystatechange = function() {
                                                     
                                                                                         if (myreq.readyState == 4) {
                                                                                                                    if (myreq.status == 200) {

                                                                                                                      document.getElementById('show_wait').innerHTML='';
                                                                                                                      waitvar = 'finished';
//                                                                                                                      document.getElementById('error_section').innerHTML +=waitvar+' ';
                                                                                                                                             var item = myreq.responseText;
                                                                                                                                             if(getxml==1) {
                                                                                                                                                           item = myreq.responseXML;
                                                                                                                                             }
                                                                                                                                             doCallback(callback, item);
                                                                                                                    }
                                                                                         }else {
                                                                                           document.getElementById('show_wait').innerHTML='<img src="images/wait30.gif">';
                                                                                         waitvar = 'waiting'

//                                                                                         document.getElementById('error_section').innerHTML +=waitvar+' ';

                                                                                         }

                                                   }
                                                   if(reqtype=='post') {
                                                                       requestPOST(url,query,myreq);
                                                   }else {
                                                         requestGET(url,query,myreq);
                                                   }
                                                   }