function show_select(input,btn,option,value){
   inputobj=document.getElementById(input); 
   btnobj=document.getElementById(btn);
   optionobj=document.getElementById(option);
   valueobj=document.getElementById(value);
   optionobj.style.display=optionobj.style.display==""?"none":"";
   optionobj.onblur=function () {
     optionobj.style.display="none";
   }
   
   for (var i=0;i<optionobj.childNodes.length;i++){
     optionobj.focus();
     optionobj.childNodes[i].onmouseover=function (){
  this.className="qty_items_over";
  }
  optionobj.childNodes[i].onmouseout=function (){
  this.className="qty_items_out";
  }
  optionobj.childNodes[i].onclick=function () {
  //alert(this.innerHTML)
  inputobj.innerHTML=this.innerHTML;
  valueobj.value=this.innerHTML; 
  optionobj.blur();
  optionobj.style.display="none";
  if (input=="pro_color"){
    loadpic(this.id,"");
  }
  }
   }
 }


/*****************以下为div滚动代码*********************/
function realScroll(i, obj) {
	if (!scrollMflag[obj]){
		i = 0 - i;
	}
	if (!scrollDown[obj]){
		document.getElementById(obj).scrollLeft +=i;
	} else {
		document.getElementById(obj).scrollTop +=i;
	}
}
var scrollArray = new Array();
var scrollFlag = new Array();
var scrollIndex = new Array();
var scrollMflag = new Array();
var scrollDown = new Array();
function doScro(obj) {
	if (scrollIndex[obj] == scrollArray[obj].length){
		scrollFlag[obj] = false;
		return;
	}
	var i = parseInt(scrollArray[obj][scrollIndex[obj]]);
	realScroll(i, obj);
	scrollIndex[obj]++;
	setTimeout("doScro('"+obj+"');", 10);
}

var index = 1;
function sro(i,cc, obj, down, type) {//(滚动像素（正负指定方向），滚动速度，滚动div.id[，滚动方向类型（true上下，false左右），滚动类型（默认，慢-快-慢,1，快-慢,2，慢-快）])
	//是否上下滚动
	if (down){
		scrollDown[obj] = down;
	}
	//正在滚动
	if (scrollFlag[obj]){
		return;
	}
	//反方向
	if (i < 0){
		scrollMflag[obj] = false
		i = 0 - i;
		--index;
		if(index<1){
			index = 1;
		}
	} else {
		scrollMflag[obj] = true;
		
		++index;
		if(index>4){
			index = 4;
		}
	}
	scrollFlag[obj] = true;
	scrollArray[obj] = new Array();
	if (type){
		var c = 1;
		while(true) {
			if (i < c){
				if (i > 0){
					scrollArray[obj].push(i + "");
				}
				break;
			}
			scrollArray[obj].push(c + "");
			i -= c;
			c += cc;
		}
		if (type==1)
			scrollArray[obj] = scrollArray[obj].reverse();
	} else {
		var c = 1;
		if (i % 2 == 1)
			i++;
		var b = new Array();
		while (i > 0 && i > 3 * c){
			scrollArray[obj].push(c + "");
			b.push(c + "");
			i -= 2*c
			c += cc;
		}
		scrollArray[obj].push(i);
		b = b.reverse();
		scrollArray[obj] = scrollArray[obj].concat(b);
	}
	scrollIndex[obj] = 0;
	doScro(obj);
	
	setTab('t',index,4);
}