function checkSearchByElements()
{
	var searchByELements=document.getElementById("searchByElements");
	
	if (searchByELements.elements["screen"].value==null||searchByELements.elements["screen"].value=="")
	{
		alert("All three menus must be selected. Please choose screen option");
		return false;
	}else if (searchByELements.elements["paper"].value==null||searchByELements.elements["paper"].value=="")
	{
		alert("All three menus must be selected. Please choose paper option");
		return false;
	}else if (searchByELements.elements["gsm"].value==null||searchByELements.elements["gsm"].value=="")
	{
		alert("All three menus must be selected. Please choose gsm option");
		return false;
	}else
	{
		return true;	
	}
}

function checkSearchByAM()
{
	var searchByELements=document.getElementById("searchByAMScreen");
	
	if (searchByELements.elements["am"].value==null||searchByELements.elements["am"].value=="")
	{
		alert("Please choose am option");
		return false;
	}else
	{
		return true;	
	}
}

function checkSearchByFM()
{
	var searchByELements=document.getElementById("searchByFMScreen");
	
	if (searchByELements.elements["fm"].value==null||searchByELements.elements["fm"].value=="")
	{
		alert("Please choose fm option");
		return false;
	}else
	{
		return true;	
	}
}