//here you place the ids of every element you want.
var idss=new Array('c1','c2','c3','c4','c5');

function switchidd(id){	
	hideallidsd();
	showdivd(id);
}

function hideallidsd(){
	//loop through the array and hide each element by id
	for (var i=0;i<idss.length;i++){
		hidedivd(idss[i]);
	}		  
}

function hidedivd(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdivd(id) {
	//safe function to show an element with a specified id
		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}