var emptyString = " field is blank. Please enter "
var removalString 




/***********RadioButton Required***************************************/
/*
	This function makes sure a radiobutton in a group of same
	named radiobuttons is selected
*/

function radioRequired(myfield,s){
	val = -1
	
		
	for (i=0; i < myfield.length; i++){
		if (myfield[i].checked){
			val = i
		}
	}
	
	if (val == -1) {
		
		alert(s + " must have a selection")
		return false
	}

	return true

}
/*******************************************************************/





/***********Text field entry Required***************************************/
/*
	These functions make sure that said text field has an entry
*/  


function isNull(str) {
	if (str.length == 0 )
		return true
	else 
		return false
}

function isBlank(str) {
	for (i = 0; i < str.length; i++) {
		if (str.charAt(i) != " ")
			return false
	}
	return true
}


function notNull(str) {
	if (str.length == 0 )
		return false
	else 
		return true
}

function notBlank(str) {
	for (i = 0; i < str.length; i++) {
		if (str.charAt(i) != " ")
			return true
	}
	return false
}


function textfieldRequired(myfield, s) {
	if (notNull(myfield.value)&& notBlank(myfield.value)) 
		return true
	else {
		myfield.focus()
		alert("The " + s + emptyString + s)
		return false
	}
}