/////////////img_scroll//////////////
function scroll(obj, increase, delay, length) { 
if (!delay) delay = 1 
var pos = (increase < 0) ? increase * -1 : increase 
pos = Math.ceil(length/pos) 
var first = obj.scrollLeft 
function doScroll() { 
if (length && pos-- <= 0) { 
clearInterval(obj.interval) 
return 
} 
obj.scrollLeft += increase 
if (obj.scrollLeft !== first + increase) clearInterval(obj.interval) 
first = obj.scrollLeft 
} 
if (obj.interval) { 
clearInterval(obj.interval) 
} 
obj.interval = setInterval(doScroll, delay) 
}

function showfull(img,title) {
	document.getElementById("main_img").innerHTML='<img class="img_serg" height="500" src="photo/'+img+'" title="'+title+'"/><div><h1 class="img_title">'+title+'</h1></div>';
}
function imgchange(id) {
	document.getElementById(id).className='img_serg_act';
}

function imgchangeout(id) {
	document.getElementById(id).className='img_serg';
}