function checkGo(formobj) {
	var value = formobj.elements[0].options[formobj.elements[0].options.selectedIndex].value;
	if ( value == 0 || value == -1 ) {
		alert("Please choose before searching");
		return false;
	}
	return true;
}

function checkFormat(formobj) {

	var value = formobj.elements[0].options.selectedIndex;
	if ( value == 0 ) {
		alert("Please choose a media format");
		return false;
	}
	return true;

}
function checkFormat2(item) {
	var formname = "form_"+item;
	var shortcut = document.forms[formname].elements[0];
	if (shortcut.options.selectedIndex==0) {
		alert("Please choose a media format");
		return false;
	}
	return true;
}
function checkFormat3(item) {

	var names = "format_" + item;
	var indexsel = document.buy.elements[names].options.selectedIndex;

	if ( indexsel == 0 ) {
		alert("Please choose a media format");
		return false;
	} 
	return true;
}

function go() {
	document.forms[0].submit();
}