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	// variables
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	window.status = 'Bienvenido a KÖOAL';
	
	// functions
	function newImage(arg) {
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			rslt.src = arg;
			return rslt;
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	function changeImages() {
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	function preloadImages() {
		if (document.images) {
			mn_principal_over = newImage("images/mn_principal_over.jpg");
			mn_catalogo_mn_principal_over = newImage("images/mn_catalogo_mn_principal_ov.jpg");
			mn_catalogo_over = newImage("images/mn_catalogo_over.jpg");
			mn_empresa_mn_catalogo_over = newImage("images/mn_empresa_mn_catalogo_over.jpg");
			mn_empresa_over = newImage("images/mn_empresa_over.jpg");
			mn_contacto_mn_empresa_over = newImage("images/mn_contacto_mn_empresa_over.jpg");
			mn_contacto_over = newImage("images/mn_contacto_over.jpg");
			img_cab_04_mn_principal_over = newImage("images/img_cab_04_mn_principal_ove.jpg");
			img_cab_04_mn_catalogo_over = newImage("images/img_cab_04_mn_catalogo_over.jpg");
			img_cab_04_mn_empresa_over = newImage("images/img_cab_04_mn_empresa_over.jpg");
			img_cab_04_mn_contacto_over = newImage("images/img_cab_04_mn_contacto_over.jpg");
			mn_buscar_over = newImage("images/mn_buscar_over.jpg");
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	}
	// check forms functions
	function CheckBlank(fld, mnsg){
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			if(mnsg != ''){
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			return(true);
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		return(false);
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	function isNumeric(dgt, mnsg, empty){		
		if((isNaN(dgt.value)) || ((!empty) && (dgt.value == ""))){
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			alert(mnsg);
			return(false);
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		return(true);
	}
	
	function CheckSelect(slct, mnsg){
		if((slct.length == 0) || (slct.options[slct.selectedIndex].value == "")){
			slct.focus();
			if(mnsg != ''){
				alert(mnsg);
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			return(true);
		}
		
		return(false);
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	function DoFastSearch(){
		if((!CheckBlank(document.forms[0].elements['KEY_WORD'], '')) ||
		   (!CheckSelect(document.forms[0].elements['FMLY_NM'], ''))){
			document.forms[0].action = 'search.php';
			document.forms[0].submit();
		}else{
			alert('Introduzca al menos un criterio de búsqueda: por familia o por palabra(s) clave(s)')
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	function DoPagination(offset){
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		document.forms[2].action = 'search.php';
		document.forms[2].submit();
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	function DoPaginationModal(offset){
		document.forms[0].target = window.name;
		document.forms[0].elements['OFFSET'].value = offset;
		document.forms[0].action = 'modalproducts.php';
		document.forms[0].submit();
	}
	
	
	function DoFamilies(){
		document.forms[1].action = 'listfamilies.php';
		document.forms[1].submit();
	}
	
	function DoDownload(){
		document.forms[1].action = 'download.php';
		document.forms[1].submit();
	}		
//-->