var error="";

var fields=new Array("user_login");

var errorMessages=new Array();
errorMessages["user_login"]="Please enter the identifier!\n";
errorMessages["user_login_ERROR"]=false;

errorMessages["user_login_hibas"]="The identifier can only contain upper and lower case letters and numbers!\n";
errorMessages["user_login_hossz"]="The identifier can be a minimum of 5 and a maximum of 20 characters long!\n";

function formsubmit(){
	checkErrors();
	if(error==""){
		with(document.forms.pageform){submit();
			FRM_SUBMIT.value="Sending in progress...";
			FRM_SUBMIT.disabled=true;
		}
	} else {
		showErrors(fields,errorMessages); 
		alert(form_format_alert_text(error+"Thank you!"));
	}
}

function checkErrors(){
	error="";
	
	with(document.forms.pageform){
        miez='user_login';
        if(eval(miez+'.value==""')){error+=errorMessages[miez]; errorMessages[miez+"_ERROR"]=true; 
        } else errorMessages[miez+"_ERROR"]=false;

        if(error==''){
            if(user_login.value.length<5 || user_login.value.length>20) {error+=errorMessages["user_login_hossz"]; errorMessages["user_login_ERROR"]=true;
            } else if(user_login.value.match(/[^0-9a-zA-Z]/)) {error+=errorMessages["user_login_hibas"]; errorMessages["user_login_ERROR"]=true;
    		} else errorMessages["user_login_ERROR"]=false;
        }
	}	
}