/**
* Common Javascript functions
*
* Used by both Admin system and site
*
* @version 1.1 02/01/2010
* V1.1 Added getSelectedItem for Radio Buttons
*/

/*
Strip whitespace from the beginning and end of a string
Input : a string
*/
function trim(str)
{
	return str.replace(/^\s+|\s+$/g,'');
}

/*
Make sure that textBox only contain number
*/

function checkNumber(textBox)
{
	while (textBox.value.length > 0 && isNaN(textBox.value)) {
		textBox.value = textBox.value.substring(0, textBox.value.length - 1)
	}

	textBox.value = trim(textBox.value);
	/*if (textBox.value.length == 0) {
		textBox.value = 0;
	} else {
		textBox.value = parseInt(textBox.value);
	}*/
}

/*
	Check if a form element is empty.
	If it is display an alert box and focus
	on the element
*/
function isEmpty(formElement, message) {
	formElement.value = trim(formElement.value);

	_isEmpty = false;
	if (formElement.value == '') {
		_isEmpty = true;
		alert(message);
		formElement.focus();
	}
	return _isEmpty;
}

/* Set one value in combo box as the selected value */

function setSelect(listElement, listValue) {
	for (i=0; i < listElement.options.length; i++) {
		if (listElement.options[i].value == listValue)	{
			listElement.selectedIndex = i;
		}
	}
}

/*	These functions added by NC from top.html to keep all JS in one place */

function showsearch(keywords){
	document.searchform.keywords.value=keywords;
	with (window.document.searchform) {
		submit();
	}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
	d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function getProductOptions(p)
{
	with (window.document.frmProductOptions) {
		window.location.href = 'index.php?p=' + p + '&o=' + sizeOption.options[sizeOption.selectedIndex].value;
	}
}
function urlencode(str) {
	return escape(str).replace('+', '%2B').replace('%20', '+').replace('*', '%2A').replace('/', '%2F').replace('@', '%40');
}

function urldecode(str) {
return unescape(str.replace('+', ' '));
}

/* Get selected Radio Button value */
function getSelectedItem(f1, r1)
{
	chosen = "";
	len = document[f1][r1].length;

	for (i = 0; i <len; i++) {
		if (document[f1][r1][i].checked) {
			chosen = document[f1][r1][i].value;
		}
	}
	return chosen;
}