function applyFilter() {
cssCode="";
var selValue =document.getElementById('filterPillar').value;
if (selValue == 'all')
{
	cssCode = ".learning {display: block;} .hospital {display: block;} .research {display: block;}";
}
else if (selValue == 'hospital')
{
	cssCode = ".learning {display: none;} .research {display: none;} .hospital {display: block;}";
}
else if (selValue == 'research')
{
	cssCode = ".learning {display: none;} .hospital {display: none;} .research {display: block;}";
}
else 
{
	cssCode = ".hospital {display: none;} .research {display: none;} .learning {display: block;}";
}
   var styleElement = document.createElement("style");
  styleElement.type = "text/css";  
  if (styleElement.styleSheet) {
    styleElement.styleSheet.cssText = cssCode;
  } else {
    styleElement.appendChild(document.createTextNode(cssCode));
  }
  document.getElementsByTagName("head")[0].appendChild(styleElement);  
}