var aryvalidate = new Array;
var regexZipCode = '^[0-9]{5}([- /]?[0-9]{4})?$';
//var regexEmail = '^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@(([0-9a-zA-Z])+([-\w]*[0-9a-zA-Z])*\.)+[a-zA-Z]{2,9})$';
var regexEmail = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$";
var regexPhone = '^[\\(]{0,1}([0-9]){3}[\\)]{0,1}[ ||-]?([^0-1]){1}([0-9]){2}[ ]?[-]?[ ]?([0-9]){4}[ ]*((x){0,1}([0-9]){1,5}){0,1}$';

function validate(elem,regex) {
	/*
	Regular Expression parameters for various fields
	Zip Code:  ^[0-9]{5}([- /]?[0-9]{4})?$
	Email: ^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@(([0-9a-zA-Z])+([-\w]*[0-9a-zA-Z])*\.)+[a-zA-Z]{2,9})$
	Phone: ^[\\(]{0,1}([0-9]){3}[\\)]{0,1}[ ||-]?([^0-1]){1}([0-9]){2}[ ]?[-]?[ ]?([0-9]){4}[ ]*((x){0,1}([0-9]){1,5}){0,1}$
	Anything not starting with a special charachter (default) : ^[0-9a-zA-Z]
	*/
	
	bReturnValue=true;
	defaultregex="^[0-9a-zA-Z]";
			
	if (regex=="") {
		regex=defaultregex;
	}
	var re = new RegExp(regex);
	if (elem.type==undefined) { //Entire Form Validation
		var elemfocus=-1;
		var elemmissed=0
		var strMsg="";
		for (var i=0;i<elem.length;i++) {  //Whole Form
			var strrfv = "rfv"+elem.elements[i].name; //.substr(3);
			if (aryvalidate[elem.elements[i].name]) {
				var re = new RegExp(aryvalidate[elem.elements[i].name]);
			}
			else {
				var re = new RegExp(regex);
			}
			if ((!elem.elements[i].value.match(re)) && document.getElementById(strrfv)) {
				rfv = document.getElementById(strrfv);
				rfv.style.fontWeight = "bold";
				rfv.style.color="#FF0000";
				strMsg=strMsg+(elemmissed+1)+". ";
				if (strrfv.indexOf('Billing')>0) {
						strMsg=strMsg+"Billing "+rfv.innerText+"\n";
				}
				else if (strrfv.indexOf('Shipping')>0) {
						strMsg=strMsg+"Shipping "+rfv.innerText+"\n";
				}
				else {
					strMsg=strMsg+rfv.innerText+"\n";
				}
				strMsg=strMsg.replace(":","");
				bReturnValue=false;
				elemmissed++;
				if (elemfocus==-1) {
					elemfocus=i;
				}
			}
		}
		if (!bReturnValue && i>0) {
			alert("You have not filled in "+elemmissed+" of the required fields correctly. \n Please correct red bolded items...");
			elem.elements[elemfocus].focus();
			return false;
		}
	}
	else { //Form Element Validation
		if (elem.type=="text" || elem.type=="textarea") {
			var strrfv = "rfv"+elem.name; //.substr(3);
			if (regex!=defaultregex) {
				aryvalidate[elem.name]=regex;
			}
			if ((!elem.value.match(re)) && document.getElementById(strrfv)) {
				rfv = document.getElementById(strrfv);
				rfv.style.fontWeight = "bold";
				rfv.style.color="#FF0000";
				bReturnValue=false;
			}
			else {
				rfv = document.getElementById(strrfv);
				rfv.style.fontWeight = "";
				rfv.style.color="";
				bReturnValue=true;
			}
		}
	}
	return bReturnValue;

}