function checkContactForm(){
	var re =/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	var name, email, txt_message, vercode, dataRight = true;
	message = "";
	
	name = document.contactFrm.name.value;
	email = document.contactFrm.email.value;
	txt_message = document.contactFrm.message.value;
	vercode = document.contactFrm.vercode.value;
	
	if (name.length==0){
	   message += "\n -  Моля въведете Име";
	   dataRight=false;
	}
	if (email.length==0){
	   message += "\n -  Моля въведете E-mail";
	   dataRight=false;
	}
	if (email.length!=0 && email.match(re)==null){
	   dataRight=false;
	   message += "\n -  Въведеният E-Mail е грешен";
	}
	if (txt_message.length==0){
		message += "\n -  Моля въведете Съобщение";
		dataRight=false;
	}
	if (vercode.length==0){
		message += "\n -  Моля въведете Код за потвърждение";
		dataRight=false;
	}
	
	if (!dataRight){
		if (message != ""){
		   message ="\nНе сте въвели коректно всички полета от формата:\n" + message + "\n\nМоля въведете отново сгрешените полета и натиснете бутона 'Изпрати'!";
	   }
	   alert(message);
	}
	return dataRight;
}

function validateMail(inputobj, elemid, minChars, regValidation) {
	  var message = "";
	  var regExp =/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	  var flagerror = false;

	  if(inputobj.value.length < minChars)
	  {
		message="Полето тябва да е поне " + minChars + " символ" + ((minChars==1)?".":"а.");
		flagerror = true;
	  }

	  if(!(regExp.test(inputobj.value) && regValidation) )
	  {
		message +="Enter valid e-mail.";
		flagerror = true;
	  }

	  if( flagerror) 
	  {
		message = "Error: " + message;
		var elem = document.getElementById(elemid);
		var elem_ = document.getElementById(elemid + "_");
		elem.style.display = 'inline';
		elem_.style.display = 'inline';
		elem.innerHTML = message;
	  }
	  else 
	  {
		var elem = document.getElementById(elemid);
		var elem_ = document.getElementById(elemid + "_");
		elem.style.display = 'none';
		elem_.style.display = 'none';
	  }
}

function clearText(clear_id) {
	document.getElementById(clear_id).value = '';
}
	
function show_panel(show,butt,text){
	if(document.getElementById(show).style.display == 'none') {
		document.getElementById(show).style.display = 'inline';
		document.getElementById(butt).value = 'hidden '+text;		
	}	
	else {
		document.getElementById(show).style.display = 'none';
		document.getElementById(butt).value = 'show '+text;				
	}	
}

function show_panel_add(show){
	if(document.getElementById(show).style.display == 'none') {
		document.getElementById(show).style.display = 'inline';
		//document.getElementById(butt).value = 'hidden '+text;		
	}	
	else {
		document.getElementById(show).style.display = 'none';
		//document.getElementById(butt).value = 'show '+text;				
	}	
}

function hide_panel(hide) {
	document.getElementById(hide).style.display = 'none';
}

function show_old() {
	if(document.getElementById('search_type').value == 'time')
		show_panel('old');
	else
		hide_panel('old');
}

var bustcachevar=1; //bust potential caching of external pages after initial request? (1=yes, 0=no)
var bustcacheparameter="";

function createRequestObject(){
	try	{
		xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
	}	catch(e)	{
		alert('Sorry, but your browser doesn\'t support XMLHttpRequest.');
	};
	return xmlhttp;
};

function ajaxpage(url, containerid, requesttype){
	var page_request = createRequestObject();
	if (requesttype=='get'){
		if (bustcachevar) bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', url+bustcacheparameter, true)
		page_request.send(null)
	} else if (requesttype=='post') {
		page_request.open('POST', url, true);
		page_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		page_request.setRequestHeader("Content-length", poststr.length);
		page_request.setRequestHeader("Connection", "close");
		page_request.send(poststr);
	};

	page_request.onreadystatechange=function(){
		loadpage(page_request, containerid)
	}

}

function loadpage(page_request, containerid){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)) {
		document.getElementById(containerid).innerHTML=page_request.responseText;
	};
}