function raiseLayer(activeBlock1) {

	var a = document.getElementById(activeBlock1);

	var x = document.getElementsByTagName(a.nodeName);

	for (var i=0;i<x.length;i++) {

		if (x[i].id.substring(0,6) == '_block') {

			x[i].style.visibility = "hidden";

			x[i].style.zIndex = 0;

		} else if (x[i].id.substring(0,6) == '_inner') {

			x[i].style.visibility = "hidden";

			x[i].style.zIndex = 0;

		}

	}

	a.style.visibility = "visible";

	a.style.zIndex = 1;

}



function showBlock(activeBlock,hiddenBlocks) {

	var a = document.getElementById(activeBlock);

	var x = document.getElementsByTagName(a.nodeName);

	if (hiddenBlocks == null) {

		n = activeBlock.indexOf("_",1);

		hiddenBlocks = activeBlock.substring(0,n);

	} else n = hiddenBlocks.length;



	for (var i=0; i<x.length; i++) {

		if (x[i].id.substring(0,n) == hiddenBlocks) {

			x[i].style.display = "none";

		}

	}

	a.style.display = "block";

}



function changeTab(activeTab,tabClass,otherClass) {

	var x = document.getElementsByTagName('a');

	for (var i=0; i<x.length; i++) {

		if (x[i].id.substring(0,4) == "tab_") {

			x[i].className = otherClass;

		}

	}

	document.getElementById(activeTab).className = tabClass;

}



function hideBlock(activeBlock,hiddenBlocks) {

	var x = document.getElementsByTagName('div');

	if (hiddenBlocks == null) {

		n = activeBlock.indexOf("_",1);

		hiddenBlocks = activeBlock.substring(0,n);

	} else n = hiddenBlocks.length;



	for (var i=0; i<x.length; i++) {

		if (x[i].id.substring(0,n) == hiddenBlocks) {

			x[i].style.display = "block";

		}

	}

	document.getElementById(activeBlock).style.display = "none";

}



function raiseInnerLayer(activeBlock1) {

	var x = document.getElementsByTagName('div');

	for (var i=0;i<x.length;i++) {

		if (x[i].id.substring(0,6) == '_inner') {

			x[i].style.visibility = "hidden";

			x[i].style.zIndex = 0;

		}

	}

	document.getElementById(activeBlock1).style.visibility = "visible";

	document.getElementById(activeBlock1).style.zIndex = 1;

}



function raiseNav(activeBlock1) {

	var x = document.getElementsByTagName('div');

	for (var i=0;i<x.length;i++) {

		if (x[i].id.substring(0,4) == '_nav') {

			x[i].style.visibility = "hidden";

		}

	}

	document.getElementById(activeBlock1).style.visibility = "visible";

}