//popup-ablakban megnyitja a B típusú képnézegetőt
function ViewerB(pageb,lang,id) 
{
   w = 680;
   h = 550;
   url="popup_viewerb.php?pagebimage_id=" + id +"&pageb_id=" + pageb + "&lang=" + lang;
   vBWin = window.open(url,"vBIWin","width="+w+",height="+h+",status=0,resizable=0,scrollbars=0");
}


function getScrollXY()
{
  var scrOfX = 0, scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
    scrOfX = window.pageXOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
    scrOfX = document.body.scrollLeft;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
    scrOfX = document.documentElement.scrollLeft;
  }
  return [ scrOfX, scrOfY ];
}


function HideOrShow(id)
{
  var obj = document.getElementById(id);
  if (obj.style.display == "")
  { obj.style.display="none"; }
  else { obj.style.display=""; }
}
 
 
function showFullscreenDiv(id)  
{      
	document.body.style.overflow="hidden"; 	 	
	var obj = document.getElementById(id);
    obj.style.display = "";
	var scroll = getScrollXY();
	obj.style.top = scroll[1]+'px';	
}  
 
 
function hideFullscreenDiv(id)  
{      
	document.body.style.overflow="";  	
	var obj = document.getElementById(id);
	obj.style.display = "none"; 			
}  


function showContentDiv(divmain,divcontent)
{
	showFullscreenDiv(divmain);
	showFullscreenDiv(divcontent);	
}


function hideContentDiv(divmain,divcontent)
{
	hideFullscreenDiv(divcontent);		
	hideFullscreenDiv(divmain);
}

function validateEmail(form_id,email) 
{
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   if(reg.test(address) == false) 
   {
      return false;
   }
   return true;
}