function showInput(){
	
	if (!document.getElementById) return false;
	if (!document.getElementById("dbtype")) return false;
	
	var dbtype = document.getElementById("dbtype");

	var qsCommercial = document.getElementById("qsCommercial");
	var qsDevelopment = document.getElementById("qsDevelopment");
	var qsAgricultural = document.getElementById("qsAgricultural");
	var qsLettings = document.getElementById("qsLettings");
	var qsSales = document.getElementById("qsSales");

	switch (dbtype.selectedIndex) {
	    case 0:

	        if (qsCommercial) qsCommercial.className = "visible";
	        if (qsDevelopment) qsDevelopment.className = "hidden";
	        if (qsAgricultural) qsAgricultural.className = "hidden";
	        if (qsLettings) qsLettings.className = "hidden";
	        if (qsSales) qsSales.className = "hidden";

	        break;
	    case 1:

	        if (qsCommercial) qsCommercial.className = "hidden";
	        if (qsDevelopment) qsDevelopment.className = "visible";
	        if (qsAgricultural) qsAgricultural.className = "hidden";
	        if (qsLettings) qsLettings.className = "hidden";
	        if (qsSales) qsSales.className = "hidden";

	        break;
	    case 2:

	        if (qsCommercial) qsCommercial.className = "hidden";
	        if (qsDevelopment) qsDevelopment.className = "hidden";
	        if (qsAgricultural) qsAgricultural.className = "visible";
	        if (qsLettings) qsLettings.className = "hidden";
	        if (qsSales) qsSales.className = "hidden";
	    
	        break;
	    case 3:

	        if (qsCommercial) qsCommercial.className = "hidden";
	        if (qsDevelopment) qsDevelopment.className = "hidden";
	        if (qsAgricultural) qsAgricultural.className = "hidden";
	        if (qsLettings) qsLettings.className = "visible";
	        if (qsSales) qsSales.className = "hidden";

	        break;
	    case 4:

	        if (qsCommercial) qsCommercial.className = "hidden";
	        if (qsDevelopment) qsDevelopment.className = "hidden";
	        if (qsAgricultural) qsAgricultural.className = "hidden";
	        if (qsLettings) qsLettings.className = "hidden";
	        if (qsSales) qsSales.className = "visible";

	        break;
	}
}



function dafaultqs(){
	if (!document.getElementById("dbtype")) return false;
	var dbtype = document.getElementById("dbtype");
	dbtype.selectedIndex = 0;
	showInput();
}

addLoadEvent(dafaultqs);