function loadBuidingPage(type){
   var p1=document.getElementById("page1");
   var p2=document.getElementById("page2");
   var pic1=document.getElementById("secordhand");
   var pic2=document.getElementById("lent");
   var twoSale=document.getElementById("twoSale");
   var twoRent=document.getElementById("twoRent");

   if(type==1){
	twoSale.style.display="block";
	twoRent.style.display="none";
	p2.style.display="none";
	p1.style.display="block";
	pic1.src="images/index_16.jpg";
	pic2.src="images/index_17.jpg";
	
   }else{
	   twoSale.style.display="none";
	   twoRent.style.display="block";
	   p1.style.display="none";
	   p2.style.display="block";
	   pic1.src="images/index_16-1.jpg";
	   pic2.src="images/index_17-1.jpg";
   }
}