function kvart() {
		  document.getElementById("kvart").style.display="block";
		  document.getElementById("house").style.display="none";
		  document.getElementById("ground").style.display="none";
		  document.getElementById("commerce").style.display="none";		 
		  
		  document.getElementById("submenu_kvart").className="submenu_bold";		 
		  document.getElementById("submenu_house").className="lh";		 
		  document.getElementById("submenu_ground").className="lh";		 
		  document.getElementById("submenu_commerce").className="";		 
		}
		
		 function house() {
		  document.getElementById("kvart").style.display="none";
		  document.getElementById("house").style.display="block";
		  document.getElementById("ground").style.display="none";
		  document.getElementById("commerce").style.display="none";		  	

		  document.getElementById("submenu_kvart").className="lh";		 
		  document.getElementById("submenu_house").className="submenu_bold";		 
		  document.getElementById("submenu_ground").className="lh";		 
		  document.getElementById("submenu_commerce").className="";				  	  		  
		}
		
		 function ground() {
		  document.getElementById("kvart").style.display="none";
		  document.getElementById("house").style.display="none";
		  document.getElementById("ground").style.display="block";
		  document.getElementById("commerce").style.display="none";	
		  
		  document.getElementById("submenu_kvart").className="lh";		 
		  document.getElementById("submenu_house").className="lh";		 
		  document.getElementById("submenu_ground").className="submenu_bold";		 
		  document.getElementById("submenu_commerce").className="";				  	  		  		  
		}
		
		 function newkvart() {
		  document.getElementById("kvart").style.display="block";
		  document.getElementById("compleks").style.display="none";
		  
		  document.getElementById("submenu_newkvart").className="submenu_bold";		 
		  document.getElementById("submenu_compleks").className="lh";	  	  		  		  
		}
		
		 function compleks() {
		  document.getElementById("kvart").style.display="none";
		  document.getElementById("compleks").style.display="block";
		  
		  document.getElementById("submenu_newkvart").className="lh";		 
		  document.getElementById("submenu_compleks").className="submenu_bold";	  	  		  		  
		}
		
		 function commerce() {
		  document.getElementById("kvart").style.display="none";
		  document.getElementById("house").style.display="none";
		  document.getElementById("ground").style.display="none";
		  document.getElementById("commerce").style.display="block";	  		
		  
		  document.getElementById("submenu_kvart").className="lh";		 
		  document.getElementById("submenu_house").className="lh";		 
		  document.getElementById("submenu_ground").className="lh";		 
		  document.getElementById("submenu_commerce").className="submenu_bold";
		  document.getElementById("submenu_commerce").style.lineHeight="normal";				    
		  				    
		}		
		
		function town(){
			document.getElementById("btn_gor").className="vibor_sel";
			document.getElementById("btn_obl").className="";			
			
			document.getElementById("towns").style.display="block";
			document.getElementById("oblasti").style.display="none";			
			
		}
		function obl(){
			document.getElementById("btn_gor").className="";
			document.getElementById("btn_obl").className="vibor_sel";	
			
			document.getElementById("towns").style.display="none";
			document.getElementById("oblasti").style.display="block";								
		}