//  isEmail :: returns true if a given string is a valid email address

function isEmail(str) {
    // are regular expressions supported?
    var supported = 0;

    if (window.RegExp) {
        var tempStr = "a";
        var tempReg = new RegExp(tempStr);
        if (tempReg.test(tempStr))
            supported = 1;
    }

    if (!supported)
        return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);

    var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
    var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");

    return (!r1.test(str) && r2.test(str));
}



/*Check required form elements script-By JavaScript Kit (http://javascriptkit.com) Over 200+ free scripts here!*/

function checkrequired(which){
var pass=true
if (document.images){
for (i=0;i<which.length;i++){
var tempobj=which.elements[i]
if (tempobj.name.substring(0,8)=="required"){
if (((tempobj.type=="text"||tempobj.type=="textarea")&&tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&tempobj.selectedIndex==-1)){
pass=false
break
}
}
}
}
if (!pass){
alert("One or more of the required elements are not completed. Please complete them, then submit again!")
return false
}
else
return true
}