String.prototype.startsWith = function(mystr) 
{return (this.match("^"+mystr)==mystr)}
 
 function zicheckform(myform) {
 
  //GF Added	 

  var firstErrorField = '';	 
  
  var error = false;
   
  var ERROR_COLOUR = '#666666';
   var OK_COLOUR = '#ffffff';
 
   for (var i=0; i < myform.elements.length; i++) {
     var element = myform.elements[i];
	 if (element.name.startsWith('m_')) {
	   if (element.value == '') {
	     element.style.backgroundColor = ERROR_COLOUR;
	     if(firstErrorField == ''){
	    	 firstErrorField = element.name;
	    	 element.focus();
	     }
		 var error = true;
	   } else {
	     element.style.backgroundColor = OK_COLOUR;
	   }
	 }
	 if (element.name.startsWith('v_')) {
	   if (!echeck(element.value)) {
	     element.style.backgroundColor = ERROR_COLOUR;
	     if(firstErrorField == ''){
	    	 firstErrorField = element.name;
	    	 element.focus();
	     }
		 var error = true;
	   } else {
	     element.style.backgroundColor = OK_COLOUR;
	   }
	 }
	 if (element.name.startsWith('tc_')) {
	   if (!element.checked) {
	     alert('You must agree to our terms and conditions to continue.');
		 var error = true;
	   }
	 }
   }
   
   if(firstErrorField != ''){
	   //document.getElementById(firstErrorField).focus();
   }
   
   return !error;
   
 }

function echeck(str) {
/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
		var at="@";
		var dot=".";
		var lat=str.indexOf(at);
		var lstr=str.length;
		var ldot=str.indexOf(dot);
		if (str.indexOf(at)==-1){
//		   alert("Invalid E-mail ID")
		   return false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
//		   alert("Invalid E-mail ID")
		   return false;
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
//		    alert("Invalid E-mail ID")
		    return false;
		}

		 if (str.indexOf(at,(lat+1))!=-1){
//		    alert("Invalid E-mail ID")
		    return false;
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
//		    alert("Invalid E-mail ID")
		    return false;
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
//		    alert("Invalid E-mail ID")
		    return false;
		 }
		
		 if (str.indexOf(" ")!=-1){
//		    alert("Invalid E-mail ID")
		    return false;
		 }

 		 return true;					
	}