function SwapShwState(aItem){
	var elm = document.getElementById(aItem);
	elm.style.display=elm.style.display=='' ? 'none' : '';
}

//amount of horizontal scroll
function GetScrollX(){
	var sx = 0;
	if (document.documentElement && document.documentElement.scrollLeft)
		sx = document.documentElement.scrollLeft;
	else if (document.body && document.body.scrollLeft) 
		sx = document.body.scrollLeft;
	else if (window.pageXOffset)
		sx = window.pageXOffset;
	else if (window.scrollX)
		sx = window.scrollX;
	return sx;
}
//amount of vertical scroll
function GetScrollY(){
	var sy = 0;
	if (document.documentElement && document.documentElement.scrollTop)
		sy = document.documentElement.scrollTop;
	else if (document.body && document.body.scrollTop) 
		sy = document.body.scrollTop; 
	else if (window.pageYOffset)
		sy = window.pageYOffset;
	else if (window.scrollY)
		sy = window.scrollY;
	return sy;
}

function PassOnlyNums(){
    var iKeyCode;
	iKeyCode = event.keyCode;
    if( iKeyCode < 48 || iKeyCode > 57 )
        event.keyCode = null;
}