function enableZipSearch() {
	if (document.getElementById) {
		selects	= document.getElementsByTagName("select")
		texts		= document.getElementsByTagName("input")
		for (i=0;i<=selects.length-1;i++) {
			if (selects[i].id.indexOf("Location") > -1) {
				loc = selects[i]
			}
		}
		
		for (i=0;i<=texts.length-1;i++) {
			if (texts[i].id.indexOf("ZipCode") > -1) {
				zip = texts[i]
			}
		}
		
		val = loc.options[loc.selectedIndex].value
		if(isNaN(val) || val == "") {
			zip.disabled = true
		} else {
			zip.disabled = false
		}
		
		zip.value=(zip.value==""?"ZIP Code":zip.value)
	}
}
enableZipSearch()