function checkForm(formName,requiredFields) {
	var warnSwitch = 0;
	for (var i = 0; i < requiredFields.length; i++) {
		targetDivName = requiredFields[i] + "_row";
		targetDiv = new getObj(targetDivName);
		targetDiv.style.color = "#666";
		if (requiredFields[i] == "email") {
			chkAddr = document.forms[formName].elements[requiredFields[i]].value;
			if (echeck(chkAddr)==false) {
				document.forms[formName].elements[requiredFields[i]].value="";
				document.forms[formName].elements[requiredFields[i]].focus();
			}
		}
		if (document.forms[formName].elements[requiredFields[i]].value == "") {
			targetDivName = requiredFields[i] + "_row";
			targetDiv = new getObj(targetDivName);
			targetDiv.style.color = "#c03";
			warnSwitch = 1;
		}
	}
	if (warnSwitch == 1) {
		showid3("warning");
		return false;
	}
}

function numcopies() {
	if (document.forms["subs_form"].copies.value > 5) { 
		document.forms["subs_form"].payment[0].disabled = 1;
		document.forms["subs_form"].payment[1].checked = "checked";
	}
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
}