function fixPrevArrow(){
	var is_chrome = false;
	
	is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
	is_safari = navigator.userAgent.toLowerCase().indexOf('safari') > -1;
	
	if(is_chrome || is_safari){

		/*/////Formula for determining prevArrow position/////
			1. Take the width of the outer bounding box (div .gallery-photo = 700px)
			2. Take the width of the image
			3. Subtract the image width from the box
			4. Divide by 2
			5. Add an offset value of 25px (we want it to be 25 from the edge, which is what you just got)
		*/

		document.getElementById("prevArrow").style.marginLeft = ((700-(document.getElementById("dys-image").offsetWidth - 8))/2) + 25 + "px";
	}
}