function onContact() {
   	
   	var field = document.getElementById("contactField");
    if( !field ) {
      return;
    }
   	
   	if (field.value=='email или телефон')   
   		field.value = '';
   	else if (field.value=='')
   		field.value = 'email или телефон';
   		
   }
   
   function billetFormSubmit() {
   	var c = document.getElementById("pifForm")
   	req = "?AJAX=Y";
   	
   	var error = false;
   	
   	for (var i = 0; i < c.elements.length; i++) {
    	if (c.elements[i].value == 'email или телефон') {
    		error = true;
    		break;
    	}

        req += ';'+encodeURIComponent(c.elements[i].name) +"="+ encodeURIComponent(c.elements[i].value);
    }
    req += ';charset=UTF-8';
    
    //alert(req);
    //c.innerHTML = req;
    if (!error)
		openPage('/collector/'+req,'pifForm');
   	}
   	
   	function openPage(page,targetName,postData)
     { 
          if(targetName==null)targetName='htmlcontent';
          var req = null; 
          var target = document.getElementById(targetName);

          target.innerHTML="Подождите...";
          //ShowWaitWindow();

                if (window.XMLHttpRequest) { // Mozilla, Safari,...
                    req = new XMLHttpRequest();
                    if (req.overrideMimeType) {
                        req.overrideMimeType('text/xml');
                    }
                } else if (window.ActiveXObject) { // IE
                    try {
                        req = new ActiveXObject("Msxml2.XMLHTTP");
                    } catch (e) {
                        try {
                        req = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch (e) {}
                    }
                }

                if (!req) {
                    alert('Cannot create an XMLHTTP instance!');
                    return false;
                }

          
          req.onreadystatechange = function()
          { 
               //target.innerHTML="Загрузка...";
               if(req.readyState == 4)
               {
                   // CloseWaitWindow();
                    if(req.status == 200)
                    {
                         target.innerHTML=req.responseText;
                         
                                             }     
                    else     
                    {
                         target.innerHTML="Ошибка: " + req.status + " " + req.statusText;
                    }     
               } 
          }; 
          if(postData && postData!=''){
               req.open("POST", page, true); 
               req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
               req.send(postData); 
          }else{
               req.open("GET", page, true); 
               req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
               req.send(null); 
          }
          
          
}