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

var getScrollY = function() {
 scrolly = window.pageYOffset || (document.documentElement && document.documentElement.scrollTop) || (document.body && document.body.scrollTop); 
 if (scrolly=='undefined' || scrolly==NaN) scrolly=0;
 return scrolly;
 }

function  goto(locat)
{
	window.location.href=locat+"&v="+getScrollY();
}

/*
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;
		}
	}	
}

function SaveScrollXY() {
document.Form1.ScrollY.value = document.body.scrollTop;

}

function ResetScroll(hidy) {
alert(hidy);
if (typeof hidy != 'undefined') {

window.scrollTo(0, hidy);

}

}