function techTag(){
	var a = document.getElementById("compareA");
	var b = document.getElementById("compareB");
	var c = document.getElementById("techtagresult");
	if(!a || !b || !c){
		alert('Elements missing!');
	} else {
		var tech = 'http://technorati.com/chartimg/';
		var tech_params = '?size=s&days=30';

		var html = '';
		html += '<hr/>';
		html += '<span style="float:left;">';
		html += '<img height="150" width="180" alt="' + a.value + '" src="' + tech + escape(a.value) + tech_params + '"/>';
		html += '<br/>';
		html += '<strong>' + a.value + '</strong>';
		html += '</span>';

		html += '<span style="float:left;">';
		html += '<img height="150" width="180" alt="' + b.value + '" src="' + tech + escape(b.value) + tech_params + '"/>';
		html += '<br/>';
		html += '<strong>' + b.value + '</strong>';
		html += '</span>';
		html += '<div style="clear:left;">&nbsp;</div>';
		html += '<hr/>';

		c.innerHTML = html;
	}
}