function toggle_visibility(id) {
       var divs = document.getElementsByTagName("div");
	   var industriesGeneric = document.getElementById("industriesGeneric");
	   var technicalGeneric = document.getElementById("technicalGeneric");
	   var toggleOptions1 = document.getElementById("toggleoptions1");
	   var toggleOptions2 = document.getElementById("toggleoptions2");
	   var parsetext = id.substr(0,5);
	   if (parsetext=="indus"){
			industriesGeneric.style.display = "none";
			toggleOptions1.style.display = "none";
		}
		else{
			industriesGeneric.style.display = "block";
		}
		if (parsetext=="techn"){
			technicalGeneric.style.display = "none";
			toggleOptions2.style.display = "none";
		}
		else{
			technicalGeneric.style.display = "block";
		}
         for (var i=0; i<divs.length; i++ ) {
           if (divs[i].className.indexOf("section") == -1) continue;
           if (divs[i].getAttribute("id") != id) {
             divs[i].style.display = "none";
           } else {
             divs[i].style.display = "block";
           }
       }
    }