var has_inner = typeof(window.innerWidth) == 'number';
var has_element = document.documentElement && document.documentElement.clientWidth;
var fm_shift_x = 0, fm_next_x = 0;
//when to slow down on percentage
var slowDown = .85;
var slowDownMore = .95;
var slowDownMost = .99;
//how fast
var speedFast = 20;
var speedMedium = 10;
var speedSlow = 5;
var speedSlowest = 2;
function pageScroll(shiftX) {
    	window.scrollBy(shiftX,0); // horizontal and vertical scroll increments
    	//scrolldelay = setTimeout('pageScroll()',100); // scrolls every 100 milliseconds
}