// JavaScript Document
function isInteger(s)
{
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function isalpha(alphane)
{
	var numaric = alphane;
	for(var j=0; j<numaric.length; j++)
		{
		  var alphaa = numaric.charAt(j);
		  var hh = alphaa.charCodeAt(0);
		  if((hh > 64 && hh<91) || (hh > 96 && hh<123))
		  {
		  }
		else	
		{
			 return false;
		}
		}
 return true;
}

function checkMail(email)
{
	var x = email;
	var filter  = /\w+@\w+\.\w{2,3}/;
//	var filter  = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]/;
		if (filter.test(x)) return true;
		else alert('Your email address appears to be invalid.  Please try again.');
		
}
function checkall(frm)
{
	if(frm.category2.value=="")
		{
		alert("Please enter your first name.");
		frm.category2.focus();
		return false;
		}
	else if(frm.category3.value=="")
		{
		alert("Please enter your email.");
		frm.category3.focus();
		return false;
		}
	else if(!checkMail(frm.category3.value))
		{
		frm.category3.focus();
		return false;
		}
	else {
		$('#loading').css("display", "block");
		$('#GRSubscribeForm').css("display", "none");	
	}
return true;
}