var i,int,k,n,yesss;
window.onload = function(){

		var qt = document.getElementById("SOBtn");
		qt.onclick = function(){
			if(yesss == 'block'){k=0;n=10;yesss='none';}else{k=0;n=10;yesss= 'block';}
			int=setInterval("yyy()",20);
		}
		var list = document.getElementById("tuangou_list").getElementsByTagName("dd");
		
		for(var id=0;id<list.length;id+=2){
			lists = list.item(id).getElementsByTagName("img").item(0);
			lists.id = "toso"+id;
			lists.onmouseover = function(){
				this.style.marginTop = '1px';
			}
			lists.onmouseout = function(){
				this.style.marginTop = '0px';
			}
		}
		var forms = document.forms.item(0).getElementsByTagName("input").item(0);
		var sovalue = "请输入要搜索的团购网站或商品";
		forms.value = sovalue;
		forms.onfocus = function(){
			if(forms.value == sovalue) forms.value="";
		}
		forms.onblur = function(){
			if(forms.value == "") forms.value=sovalue;
		}

}

function yyy(){
		var shanjia = document.getElementById("shanjia").getElementsByTagName("a");
		var alen = shanjia.length;var c=k+n;
		if(k>=alen){int=window.clearInterval(int);return;}
		for (i=k; i<c; i++){
			if(i<alen){shanjia.item(i).style.display = yesss;}
		}
		k=k+n;
}

function show_city() {
	var city = document.getElementById("show_div");
	if( city.style.display == 'none' || city.style.display == '') {
		city.style.display = "block";
	}else{
		city.style.display = "none";
	}
}