function show(str){
				  
				     if(str=="housing_articles"){
					   document.getElementById("housing_articles").style.display="";
					    document.getElementById("health_nutrition").style.display="none";
						document.getElementById("finance_articles").style.display="none";
						document.getElementById("insurance").style.display="none";
						document.getElementById("travel").style.display="none";
					 }
					 else  if(str=="health_nutrition"){
					   document.getElementById("housing_articles").style.display="none";
					    document.getElementById("health_nutrition").style.display="";
						document.getElementById("finance_articles").style.display="none";
						document.getElementById("insurance").style.display="none";
						document.getElementById("travel").style.display="none";
					 }
					  else  if(str=="finance_articles"){
					   document.getElementById("housing_articles").style.display="none";
					    document.getElementById("health_nutrition").style.display="none";
						document.getElementById("finance_articles").style.display="";
						document.getElementById("insurance").style.display="none";
						document.getElementById("travel").style.display="none";
					 }
					  else  if(str=="travel"){
					   document.getElementById("housing_articles").style.display="none";
					    document.getElementById("health_nutrition").style.display="none";
						document.getElementById("finance_articles").style.display="none";
						document.getElementById("insurance").style.display="none";
						document.getElementById("travel").style.display="";
					 }
					  else  if(str=="insurance"){
					   document.getElementById("housing_articles").style.display="none";
					    document.getElementById("health_nutrition").style.display="none";
						document.getElementById("finance_articles").style.display="none";
					    document.getElementById("insurance").style.display="";
						document.getElementById("travel").style.display="none";
					 }
					 
					 
				  }