var remail=/^([_&a-zA-Z0-9-]+(\.[_&a-zA-Z0-9-]+)*@[&a-zA-Z0-9-]+\.+[&a-zA-Z0-9-]+)/;

function checkEmail(fieldvalue){
	if(remail.test(fieldvalue))
		return false;
	else
		return true;
	
}

function trim(str)
{
	return str.replace(/^\s*|\s*$/g,"");
}

function blockNumbers(e)
{

	var key;
	var keychar;
	var reg;

	if(window.event) {
		// for IE, e.keyCode or window.event.keyCode can be used
		key = e.keyCode;
	}
	else if(e.which) {
		// netscape
		key = e.which;
	}
	else {
		// no event, so pass through
		return true;
	}

	keychar = String.fromCharCode(key);

	if ( (key>=48 &&  key<=57) || (key==46) || (key==45) || (key==34) || (key==39) || (key==32) || (key == 8) || (key == 43) || (key == 41) || (key == 40))
	{
		return true;
	}
	else
	{
		return false;
	}
}

function isURL(url)
{
	var urlPattern = /^(?:(?:ftp|https?):\/\/)?(?:[a-z0-9](?:[-a-z0-9]*[a-z0-9])?\.)+(?:com|edu|biz|org|gov|int|info|mil|net|name|museum|coop|aero|[a-z][a-z])\b(?:\d+)?(?:\/[^;"'<>()\[\]{}\s\x7f-\xff]*(?:[.,?]+[^;"'<>()\[\]{}\s\x7f-\xff]+)*)?/;
	return urlPattern.test(url.toLowerCase());
}