function changetext1(){ 

document.getElementById("quarrying").style.color="white" 
document.getElementById("quarrying").style.visibility = 'visible'
}

function changetext11(){ 
document.getElementById("quarrying").style.visibility = 'hidden'
}


function changetext2(){ 

document.getElementById("construction").style.color="white" 
document.getElementById("construction").style.visibility = 'visible'
}

function changetext21(){ 
document.getElementById("construction").style.visibility = 'hidden'
}


function changetext3(){ 
document.getElementById("recycling").style.color="white"
document.getElementById("recycling").style.visibility = 'visible'
}
function changetext31(){ 
document.getElementById("recycling").style.visibility = 'hidden'
}

			
function changetext4(){ 
document.getElementById("opencast").style.color="white"
document.getElementById("opencast").style.visibility = 'visible'
}
function changetext41(){ 
document.getElementById("opencast").style.visibility = 'hidden'
}

function changetext5(){ 
document.getElementById("material").style.color="white"
document.getElementById("material").style.visibility = 'visible'
}
function changetext51(){ 
document.getElementById("material").style.visibility = 'hidden'
}

	function changetext6(){ 
document.getElementById("landfill").style.color="white"
document.getElementById("landfill").style.visibility = 'visible'
}
function changetext61(){ 
document.getElementById("landfill").style.visibility = 'hidden'
}		


function changetext7(){ 
document.getElementById("quarryingc").style.color="white"
document.getElementById("quarryingc").style.visibility = 'visible'
}
function changetext71(){ 
document.getElementById("quarryingc").style.visibility = 'hidden'
}

function changetext8(){ 
document.getElementById("quarryingsg").style.color="white"
document.getElementById("quarryingsg").style.visibility = 'visible'
}
function changetext81(){ 
document.getElementById("quarryingsg").style.visibility = 'hidden'
}