function refresh_captcha()
{
	var url = 'ajax.php?islem=captcha';
	// notice the use of a proxy to circumvent the Same Origin Policy.
	
	new Ajax.Request(url, {
	  method: 'post',
	  onSuccess: function(transport) {
		var notice = $('captcha_div_form');
		if (transport.responseText.length > 0)
		  notice.update(transport.responseText);
		else
		  notice.update('veri alinamadi' + transport.responseText);
	  },
	  onFailure: function(transport) {
	  	var notice = $('captcha_div_form');
		notice.innerHTML = "Yükleme sorunu" + transport.responseText;
	  }
	});
}

function resim_goster(element,image,ev)
{
	var e = ev ? ev : window.event;
	
	var x_ = getMouseX(e);
	var	y_ = getMouseY(e);
	
	var resim_harita = document.getElementById(element);
	var resim = image;
	resim = '<img src="' + resim + '" onClick="resim_gizle(\'image_view\')" />';
	
	resim_harita.innerHTML = resim;
	resim_harita.style.display = 'block';
	
	resim_harita.style.left = (x_ - 100) + 'px'; 
	resim_harita.style.top = (y_ - 70) + 'px';

}

function resim_gizle(element)
{
	var object = document.getElementById(element);
	object.style.display = 'none';
}

function getMouseX(e) 
{
	return e.pageX || ( e.clientX + ( document.documentElement.scrollLeft || document.body.scrollLeft ) );
}

function getMouseY(e) 
{
	return e.pageY || ( e.clientY + ( document.documentElement.scrollTop || document.body.scrollTop ) );
}