function ScrollImgLeft(){
var speed=10
var scroll_begin = document.getElementById("scroll_begin");
var scroll_end = document.getElementById("scroll_end");
var scroll_block = document.getElementById("scroll_block");
scroll_end.innerHTML=scroll_begin.innerHTML
function Marquee(){
if(scroll_end.offsetWidth-scroll_block.scrollLeft<=0)
  scroll_block.scrollLeft-=scroll_begin.offsetWidth
else
  scroll_block.scrollLeft++
}
var MyMar=setInterval(Marquee,speed)
scroll_block.onmouseover=function() {clearInterval(MyMar)}
scroll_block.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
}