function changeSrcCont()
{
	document.getElementById("myImageCont").src="./images/structure/2-5.jpg";
}

function changeSrcContBack()
{
	document.getElementById("myImageCont").src="./images/structure/2-5-1.jpg";
}

function changeSrcPolly()
{
	document.getElementById("myImagePolly").src="./images/structure/2-4.jpg";
}

function changeSrcPollyBack()
{
	document.getElementById("myImagePolly").src="./images/structure/2-4-1.jpg";
}

function changeSrcSites()
{
	document.getElementById("myImageSites").src="./images/structure/2-3.jpg";
}

function changeSrcSitesBack()
{
	document.getElementById("myImageSites").src="./images/structure/2-3-1.jpg";
}

function changeSrcAbout()
{
	document.getElementById("myImageAbout").src="./images/structure/2-2.jpg";
}

function changeSrcAboutBack()
{
	document.getElementById("myImageAbout").src="./images/structure/2-2-1.jpg";
}