function isNumeric(x)
{
	for(i=0;i<x.length;i++)
		if(x.charCodeAt(i)<48 || x.charCodeAt(i)>57)
			return false;
	return true;
}

function validEmail(m)
{
	if(m.indexOf("@")<1||m.indexOf(".")==-1||m.lastIndexOf(".")==(m.length-1)||m.indexOf("@")-m.indexOf(".")==1||m.lastIndexOf(".")-m.indexOf("@")==1||m.lastIndexOf(".")-m.indexOf("@")==1||m.indexOf("@")!=m.lastIndexOf("@"))
		return false;		
	return true;
}

//Triming string from both sides.
function Trim(sString)
{
	while (sString.substring(0,1) == " ")
	{
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == " ")
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}


function validateContact()
{ 
   	if(Trim(document.contact.txtFirstName.value)=='')
   	{
   		alert("חובה למלא שם פרטי");
   		document.contact.txtFirstName.focus();
   		return false;
   	}

   	if(Trim(document.contact.txtEmail.value) != '')
   	{
		if(validEmail(document.contact.txtEmail.value)==false)
   		{
   			alert("אימייל לא תקין");
   			document.contact.txtEmail.focus();
   			return false;
		}
	}
   	else
	{
   		
		alert("חובה למלא אימייל");
   		document.contact.txtEmail.focus();
   		return false;
		
   	}
				
	return true;
}