function check_validityform(){
	tf='true';
	message='Plese check field below\n'
	if(document.contactform.name.value == ""){
		message += '--> Your Name\n';
		document.contactform.name.focus;
		tf='false';
	}
	if(document.contactform.email.value == ""){
		message += '--> Your Email\n';
		document.contactform.email.focus;
		tf='false';															
	}else{
		emailaddy = document.contactform.email.value;	
		if((emailaddy.indexOf("@")==-1) || (emailaddy.indexOf(".")==-1)){
			message = message + '---> Check Email It Is Correct\n';
			document.contactform.email.focus;
			tf = 'false';
		}
	}
	if(tf != 'true'){
		alert(message);
		return false;
	}
	else{
		return true;
	}
}//end function