var project = new Array();
project[0]='mezz1';
project[1]='mezz2';
project[2]='pushback1';
project[3]='pushback2';
project[4]='pushback3';
project[5]='tool';
project[6]='tool2';
project[7]='tool3';

function hideall(){
	for (i = 0; i <= project.length-1; i++)
	{
		var currentdiv = document.getElementById(project[i]);
		currentdiv.style.display='none';
	}	
}

function changeProject(id) {
	hideall();
	var currentdiv = document.getElementById(id);
	currentdiv.style.display='block';
}