function validate_required(field,alerttxt) {
	with (field) {
		if (value==null||value=="") {
			alert(alerttxt);
			return false;
		}
		else {
			return true;
		}
	}
}

function validate_email(field,alerttxt) {
	with (field) {
		apos=value.indexOf("@")
		dotpos=value.lastIndexOf(".")
		if (apos<1||dotpos-apos<2) {
			alert(alerttxt);
			return false;
		} else {
			return true;
		}
	}
}
function validate_numeric(field,alerttxt){
	with(field){
		var numericExpression = /^[0-9]+$/;
		if(value.match(numericExpression)){
			return true;
		} else {
			alert(alerttxt);
			return false;
			}
	}
}

function validate_form(thisform) {
	with (thisform) {
		if (validate_required(name1,"Please specify your name!")==false)
		{
			name1.focus();
			return false;
		}
		if(validate_required(phone1,"Please specify your phone number!")==false)
		{
			phone1.focus();
			return false;
		}
		if(validate_numeric(phone1,"Please enter valid phone number!")==false){
			phone1.focus();
			return false;
		}
		if (validate_required(email1,"Email must be filled out!")==false) {
			email1.focus();
			return false;
		}
		
		if (validate_email(email1,"Not a valid e-mail address!")==false) {
			email1.focus();
			return false;
		}
						
	}
}