function MM_preloadImages() {
  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 navOver(target)
{
	var img = document.getElementById(target)

	if (img.oSrc == undefined)
		img.oSrc = img.src
	
	var len = img.src.length
	var swapImg = img.src.substr(0, len - 4) + "_over." + img.src.substr(len - 3, len)

	img.src = swapImg
}


function navOut(target)
{
	var img = document.getElementById(target)
	img.src = img.oSrc
}

function rollOver(img)
{
	alert("img: " + img + ", --> " + img.src)
}

function contactUs()
{
	var adr = "info"
	var dmn = "openspace-engine.com"
	var fulladr = adr + "@" + dmn
	location.href = "mailto:" + fulladr 
}

// Init page onLoad
function initPage()
{
	preloadNavImages()
}

function preloadNavImages()
{
	MM_preloadImages
	(
		'/images/navbar/home_over.png',
		'/images/navbar/overview_over.png',
		'/images/navbar/download_over.png',
		'/images/navbar/showcase_over.png',
		'/images/navbar/store _over.png',
		'/images/navbar/support _over.png',
		'/images/navbar/contact _over.png'
	)
}

// Newsletter input field controllers
function remName(a, b){ if(a.value==b){ a.value=''; }else if(a.value==''){ a.value=b; }else{ a.value=a.value; } }   
function chkName(a, b){ if(a.value==''){ a.value=b; }else{ a.value=a.value; } }