// preserve scroll
function preserveScroll(parentForm) {
	try {
		var field = document.createElement('INPUT');
		field.type = 'hidden';
		field.setAttribute('name', 'goxy');
		if(document.documentElement) // xhtml
			field.value = document.documentElement.scrollLeft + ";" + document.documentElement.scrollTop;
		else // html4
			field.value = document.body.scrollLeft + ";" + document.body.scrollTop;
		parentForm.appendChild(field);
	} catch(e) {}
}
// restore scroll
function restoreScroll(XY) {
	try {
		if(document.documentElement) // xhtml
		{
			document.documentElement.scrollLeft = parseInt(XY.substring(0,XY.indexOf(";")));
			document.documentElement.scrollTop  = parseInt(XY.substring(XY.indexOf(";")+1));
		}
		else // html4
		{
			document.body.scrollLeft = parseInt(XY.substring(0,XY.indexOf(";")));
			document.body.scrollTop  = parseInt(XY.substring(XY.indexOf(";")+1));
		}
	} catch(e) {}
}