function getRandom( min, max ) {
	if( min > max ) {
		return( -1 );
	}
	if( min == max ) {
		return( min );
	}
	return( min + parseInt( Math.random() * ( max-min+1 ) ) );
}

function colorSwitcher() {
	var images = '<img id="logo_start" src="img/back_start_1.gif" /><img id="claim" src="img/claim_de_1.gif" />';
	document.getElementById('jscontent').innerHTML = images;
	document.getElementById('claim').style.display = "none";
	document.getElementById('logo_start').style.display = "none";

	var source = document.getElementById('claim').src;
	source = source.replace(/claim_de_1/g, "claim_de_"+getRandom(1,10));
	document.getElementById('claim').src = source;
	document.getElementById('claim').style.display = 'inline';
	
	var source = document.getElementById('logo_start').src;
	var sehColor = getRandom(1,6);
	source = source.replace(/back_start_1/g, "back_start_"+sehColor);
	document.cookie = "sehsuechte=" + sehColor;
	document.getElementById('logo_start').src = source;
	document.getElementById('logo_start').style.display = 'inline';
}