function btn_over(img_name, img_src)
{
   document[img_name].src = img_src;
}


function mouseOverLinks()
{
	document.Links.src ="images/links_btn_glow.jpg"
}
function mouseOutLinks()
{
	document.Links.src ="images/links_btn.jpg"
}



function mouseOverMain()
{
	document.main.alt = "Camera Obscura" 
         document.main.src ="images/main_btn_glow1.jpg"
}
function mouseOutMain()
{
	document.main.src ="images/main_btn.jpg"
}
function mouseOverDR()
{
	document.dr.src ="images/darkroom_btn_glow1.jpg"
}
function mouseOutDR()
{
	document.dr.src ="images/darkroom_btn.jpg"
}
function mouseOverH()
{
	document.history.src ="images/history_btn_glow1.jpg"
}
function mouseOutH()
{
	document.history.src ="images/history_btn.jpg"
}

function mouseOverS()
{
	document.subscribe.src ="images/subscribe_btn_glow1.jpg"
}
function mouseOutS()
{
	document.subscribe.src ="images/subscribe_btn.jpg"
}

function mouseOverG()
{
	document.guide.src ="images/guide_btn_glow1.jpg"
}
function mouseOutG()
{
	document.guide.src ="images/guide_btn.jpg"
}

function mouseOverBr()
{
	document.bridge.src ="images/bridge_btn_glow1.jpg"
}
function mouseOutBr()
{
	document.bridge.src ="images/bridge_btn.jpg"
}



function mouseOverC()
{
	document.current.src ="images/current_btn_glow1.jpg"
}
function mouseOutC()
{
	document.current.src ="images/current_btn.jpg"
}

function mouseOverA()
{
	document.archives.src ="images/archives_btn_glow1.jpg"
}
function mouseOutA()
{
	document.archives.src ="images/archives_btn.jpg"
}

function mouseOverLogout()
{
	document.logout.src ="images/logout_btn_glow.jpg"
}
function mouseOutLogout()
{
	document.logout.src ="images/logout_btn.jpg"
}

function mouseOverSubs()
{
	document.subs.src ="images/subs_btn_glow.jpg"
}
function mouseOutSubs()
{
	document.subs.src ="images/subs_btn.jpg"
}

function mouseOverAcct()
{
	document.account.src ="images/account_btn_glow1.jpg"
}
function mouseOutAcct()
{
	document.account.src ="images/account_btn.jpg"
}

function mouseOverReview()
{
	document.review.src ="images/subs_btn_glow.jpg"
}
function mouseOutReview()
{
	document.review.src ="images/subs_btn.jpg"
}

function mouseOverLogin()
{
	document.login.src ="images/login_btn_glow.jpg"
}
function mouseOutLogin()
{
	document.login.src ="images/login_btn.jpg"
}

function mouseOverEnterM()
{
	document.entermain.src ="images/enter_main_btn_down.jpg"
}
function mouseOutEnterM()
{
	document.entermain.src ="images/enter_main_btn.jpg"
}

function mouseOverEnterG1()
{
	document.enterguide1.src ="images/enter_guide_small_down.jpg"
}
function mouseOutEnterG1()
{
	document.enterguide1.src ="images/enter_guide_small.jpg"
}


function mouseOverEnterS1()
{
	document.submitguide1.src ="images/submit_guide_small_down.jpg"
}
function mouseOutEnterS1()
{
	document.submitguide1.src ="images/submit_guide_small.jpg"
}

function mouseOverEnterG2()
{
	document.enterguide2.src ="images/enter_guide_large_down.jpg"
}
function mouseOutEnterG2()
{
	document.enterguide2.src ="images/enter_guide_large.jpg"
}


function mouseOverEnterS2()
{
	document.submitguide2.src ="images/submit_guide_large_down.jpg"
}
function mouseOutEnterS2()
{
	document.submitguide2.src ="images/submit_guide_large.jpg"
}