// JavaScript Document

function nav(obj,img) {
	var realsrc = 'http://www.gr8fuel.com/img/nav/' + img
	if(navigator.appVersion.indexOf('MSIE 6')>-1) {
		obj.src = 'img/spacer.gif'
		obj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+realsrc+"', sizingMethod='scale')"
	} else {
		obj.src = realsrc
	}
}

function getCheckboxValue(id) {
	var allInputTags = document.getElementById(id+'_group').getElementsByTagName('INPUT');
	for (var c=0; c<allInputTags.length; c++) {
		if (allInputTags[c].checked) {
			return allInputTags[c].value;
			break;
		}
	}
	return ""
}

function showBig(src,bigsrc) {
	document.getElementById('bigimage').src = src
	document.getElementById('bigimage_url').href = bigsrc
	document.getElementById('bigimage_url').onclick = function() {return GB_showImage('', this.href)}
}

function changeRowStyle(obj){
  if (obj.className=='rowOver'){
    obj.className='to'
    obj.style.cursor='';
  }else{
    obj.className='rowOver'
    obj.style.cursor='pointer';
  }
}

function openOverlay(title,url,width,height) {
	GB_showCenter(title, url, /* optional */ height, width)
}