function validate_sayfa_gonder ()
{
	/*********************/
	if (document.frm_sayfa_gonder.email_from.value=="")
	{
		alert("Please enter your e-mail address.");
		return;
	}

	emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]+[\\w-_\.]+[.][\\w-_\.]+[a-zA-Z]$"
	var regex = new RegExp(emailReg);
	
	/*********************/
	if (! (regex.test(document.frm_sayfa_gonder.email_from.value)))
		{
		alert ("Please check your e-mail address.");
		return;
		}	

	/*********************/
	if (document.frm_sayfa_gonder.email_to.value=="")
	{
		alert("Please enter recipient's e-mail address.");
		return;
	}
	
	/*********************/
	var emailstring;
	emailstring = document.frm_sayfa_gonder.email_to.value.split(",");
	var checkedmail;
	
	for(i=0; i < emailstring.length; i++)
	{
		checkedmail = emailstring[i];
		if (! (regex.test(checkedmail)) && checkedmail != "")
		{
			alert ("Please check recipient's e-mail address.");
			return;
		}
	}

		document.frm_sayfa_gonder.submit();
}

/*********************/
/*********************/

function validate_bilgi_istek ()
{
	/*********************/
	if (document.frm_bilgi_istek.isim.value=="")
	{
		alert("Please enter your name.");
		return;
	}

	/*********************/
	if (document.frm_bilgi_istek.firma.value=="")
	{
		alert("Please enter your company name.");
		return;
	}

	emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]+[\\w-_\.]+[.][\\w-_\.]+[a-zA-Z]$"
	var regex = new RegExp(emailReg);
	
	/*********************/
	if (! (regex.test(document.frm_bilgi_istek.eposta.value)))
	{
		alert ("Please check your e-mail address.");
		return;
	}	

	/*********************/
	if (document.frm_bilgi_istek.telefon.value=="")
	{
		alert("Please enter your phone number.");
		return;
	}

	/*********************/
	if (document.frm_bilgi_istek.faks.value=="")
	{
		alert("Please enter your your fax number.");
		return;
	}

	document.frm_bilgi_istek.submit();
}

/*********************/
/*********************/

/* Max character check */
var supportsKeys = false;

function start_capture() {
tick();
document.frm_sayfa_gonder.max_karakter.select();
}

function tick() {
calcCharLeft(document.frm_sayfa_gonder);
if (!supportsKeys) timerID = setTimeout("tick()",200);
}

function calcCharLeft(f) 
{
	maxLength = 500;		
	if (f.comments.value.length > maxLength)
	{
		f.comments.value = f.comments.value.substring(0,maxLength);
		charleft = 0;
	}
	else
	{
		charleft = maxLength - f.comments.value.length;
	}
	f.max_karakter.value = charleft;
}

function textKey(f) 
{
	supportsKeys = true;
	calcCharLeft(f);
}
/*************************/