function getbyid(id_name) {
	if (document.getElementById)
	{
		return document.getElementById(id_name);
	}
	else if (document.all)
	{
		return document.all[id_name];
	}
	else if (document.layers)
	{
		return document.layers[id_name];
	}
	else
	{
		return null;
	}
}
function is_valid_email(email) {

 return /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i.test(email);
}
function openAWindow( pageToLoad, winName, width, height, center, scroll) {
	xposition=0;
	yposition=0;
	if ((parseInt(navigator.appVersion) >= 4 ) && (center)){
  	xposition = (screen.width - width) / 2;
  	yposition = (screen.height - height) / 2;
  }

  args = "width=" + width + "," + "height=" + height + "," + "location=0," + "scrollbars=" + scroll + "," + "screenx=" + xposition + "," + "screeny=" + yposition + "," + "left=" + xposition + "," + "top=" + yposition;

  return window.open( pageToLoad, winName, args );
}

function open_weblink(weblink) {

	if(weblink != '')
		window.open(weblink);
}
	
function zoom_image(img_fn, width, height) {
	if(width > 0 && height > 0) {
		var hnd = openAWindow('create_image.php?dir=products&thumb_size=fullsize&file_name=' + img_fn, 'zoom_larger', width, height, 1, 0);
	}	
}

function select_list( the_list, the_value ) {
 var the_list = getbyid(the_list);
 var option_count = the_list.options.length;

 for ( i = 0; i < option_count; i++ )
 {
  if ( the_value == the_list.options[i].value )
  {
   the_list.options[i].selected = true;
   break;
  }
 }
}

function dr(text) {
	document.write(text);
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function changeTab(tabid) {
	getbyid('tab1').className = 'tab-0';
	getbyid('tab2').className = 'tab-0';
	getbyid('tab3').className = 'tab-0';
	
	getbyid('tab'+tabid).className = 'tab-1';
	
	getbyid('tab1content').style.display = 'none';
	getbyid('tab2content').style.display = 'none';
	getbyid('tab3content').style.display = 'none';
	
	getbyid('tab'+tabid+'content').style.display = '';
}
function qsearch(cid) {
	if(cid > 0) {
		window.location.href = 'quick_search.php?s_cateid=' + cid;
	}
}