/**************************
numbersonly

allows only numbers to be entered into a field.
**************************/
function numbersonly(myfield, e){
	var key;
	var keychar;

	if (window.event){
		key = window.event.keyCode;
	}else if (e){
	   key = e.which;
	}else{
		return true;
	}
	
	keychar = String.fromCharCode(key);

	// control keys
	if ((key==null) || (key==0) || (key==8) || 
		(key==9) || (key==13) || (key==27) ){
		return true;

	// numbers
	}else if ((("0123456789.").indexOf(keychar) > -1)){
		return true;
	}else{
		return false;
	}
}

/**************************
 numbersonlyNoEnter
 
 allows only numbers to be entered into a field.
 **************************/
function numbersonlyNoEnter(myfield, e){
	var key;
	var keychar;
	
	if (window.event){
		key = window.event.keyCode;
	}else if (e){
		key = e.which;
	}else{
		return true;
	}
	
	keychar = String.fromCharCode(key);
	
	// control keys
	if ((key==null) || (key==0) || (key==8) || 
		(key==9) || (key==27) ){
		return true;
		
		// numbers
	}else if ((("0123456789.").indexOf(keychar) > -1)){
		return true;
	}else{
		return false;
	}
}


/**************************
numbersonlydecimal

allows only numbers and one decimal to be entered into a field.
The last parameter indicates where in the decimal array the flag is stored
Array is '0' based

use function setDecimalArray when loading stuff from the database
**************************/
var decimal= new Array(0,0,0,0,0,0,0,0);
function numbersonlydecimal(myfield, e, dec){
	var key;
	var keychar;

	if (myfield.value==''){
		decimal[dec]=0;	
	}

	if (window.event){
		key = window.event.keyCode;
	}else if (e){
	   key = e.which;
	}else{
		return true;
	}
	
	keychar = String.fromCharCode(key);

	// control keys
	if ((key==null) || (key==0) || (key==8) || 
		(key==9) || (key==13) || (key==27) ){
		return true;

	// numbers
	}else if ((("0123456789").indexOf(keychar) > -1)){
		return true;
	}else if (keychar == "."){
		if (myfield.value.indexOf(".")>-1){
			return false;
/*		 if (decimal[dec]==0){
			decimal[dec]=1;
			return true;*/
		 }else{
		 	return true;
		 }

	}else{
		return false;
	}
}

/**************************
setDecimalArray

Usage: (quotes are important)
setDecimalArray("<value>", <decimal array location>);
**************************/

function setDecimalArray(value, dec){
//alert('here');
	if ((value.indexOf(".")) >-1){
		decimal[dec]=1;
	}else{
		decimal[dec]=0;
	}
}