// JavaScript Document
function checkSearch(fm)
{
	if(fm.fromprook.value==""&&fm.toprook.value)
	{
		alert("请选择地区");
		return;
	}
	fm.submit();
}
function checkImgType(fileURL) 
{ 
  var right_type=new Array(".gif",".jpg",".jpeg",".png",".bmp")
  //本程序用来验证后缀，如果还有其它格式，可以添加在right_type;
  var right_typeLen=right_type.length; 
  var imgUrl=fileURL.toLowerCase();
  var postfixLen=imgUrl.length; 
  var len4=imgUrl.substring(postfixLen-4,postfixLen);
  var len5=imgUrl.substring(postfixLen-5,postfixLen);
  var ret="0";
  for (i=0;i<right_typeLen;i++)  
  {  
      if((len4==right_type[i])||(len5==right_type[i]))
      {
       ret="1";
      }
   }
   return ret;  
 }




function startmarquee(lh,speed,delay){    
	     var t;    
	     var oHeight = 210; /**//** div的高度 **/  
	     var p=false;   
	     var o=document.getElementById("show");    
	     var preTop = 0;   
	    o.scrollTop = 0;    
	    function start(){    
	        t=setInterval(scrolling,speed);    
	        o.scrollTop += 1;    
	    }    
	    function scrolling(){    
	        if(o.scrollTop%lh!=0 && o.scrollTop%(o.scrollHeight-oHeight-1)!=0){   
	            preTop = o.scrollTop;   
	            o.scrollTop+=1;   
	            if(preTop >= o.scrollHeight || preTop==o.scrollTop){   
	                o.scrollTop = 0;   
	            }   
	        }else{   
	            clearInterval(t);    
	            setTimeout(start,delay);    
	        }   
	    }    
	    setTimeout(start,delay);    
	}    
	//startmarquee(20,20,1500);    
	/**//**startmarquee(一次滚动高度,速度,停留时间,DIV的ID);**/