function onlyDigits(e,decReq) {
	var key = (isIE) ? window.event.keyCode : e.which;
	var obj = (isIE) ? event.srcElement : e.target;
	var isNum = (key > 47 && key < 58) ? true:false;
	var isCap = (key > 64 && key < 91) ? true:false;
	var isLet = (key > 96 && key < 123) ? true:false;
	var isUnderscore = (key == 95) ? true:false;
	var isScore = (key == 45) ? true:false;
	var dotOK = (key==46 && decReq=='decOK' && (obj.value.indexOf(".")<0 || obj.value.length==0)) ? true:false;
	if(key < 32)
	   return true;
	return (isNum || dotOK || isLet || isScore || isUnderscore);
}

window.onload = function () {
	var elements = document.getElementsByTagName('a'),
	i,
		length = elements.length;
	for (i = 0; i < length; ++i) {
		if(elements[i].getAttribute('rel') === 'external') {
			elements[i].setAttribute('target', '_blank');
		}
	}
};