function alter_if_no_caps(field) {
	if (!/[ABCDEFGHIJKLMNOPQRSTUVWXYZ]/.test(field.value)) {
		field.value = field.value.ucfirst();
	}
}

function alter_fields_init() {

	document.getElementById("forename").onblur = function() { alter_if_no_caps(this); }
	document.getElementById("surname").onblur = function() { alter_if_no_caps(this); }
	document.getElementById("address1").onblur = function() { alter_if_no_caps(this); }
	document.getElementById("address2").onblur = function() { alter_if_no_caps(this); }
	document.getElementById("address3").onblur = function() { alter_if_no_caps(this); }
	document.getElementById("city").onblur = function() { alter_if_no_caps(this); }
	document.getElementById("county").onblur = function() { alter_if_no_caps(this); }
	
	document.getElementById("postcode").onblur = function() {
		this.value = this.value.toUpperCase();
	}

}
addLoadEvent(alter_fields_init);