function datavalidation(form1){
	if (form1.elements[0].value.length==0) {
		alert("Please provide your name in the name field")
		return false
	}
	if (form1.elements[1].value.length==0) {
		alert("Please provide your e-mail address")
		return false
	}
	var str=form1.elements(1).value
	for (var j=0; j<str.length;j++){
		if (str.substring(j,j+1)==",") {
			alert("There is an error in your e-mail address.")
			return false
		}
	}

	return true
}