/*************** Verify Form Script  ********************/
/* from Freeway's Validate form action
** Edited on 08/09/04  by David Yun for Blue Iceberg LLC
** Fixed radio and checkbox form element validation
*/

function isNum(s)
{
    var c, i;
    if (s==null) return false;
    for (i=0;i<s.length;i++) {
        c=s.charAt(i); 
        if (((c>'9')||(c<'0'))&&(c!='.')&&(c!='-')) 
            return false;
    }
    return true;
}

function isBlank(s) {
    var c, i;
    if (s==null) return true;
    for (i=0;i<s.length;i++) {
        c=s.charAt(i); 
        if ((c!=' ')&&(c!='\n')&&(c!='\t')) 
            return false;
    }
    return true;
}

function VerifyForm() {
    var f = this;
    var i, e; 
    var empty_fields='';
    var empty_radio = new Array();
    var errors=''; var msg='';
    for (i=0;i<f.length;i++)
    {
        e=f.elements[i];
        if(e.name!=null && e.name.length>0 && e.validate!=null)
        {
            if ((e.type=='textarea')||(e.type=='text'))
            {
                if (isBlank(e.value))
                {
                    empty_fields += "\n    " + e.name;
                    continue;
                }
                var hasmax = !isBlank(e.max);
                var hasmin = !isBlank(e.min);
                if (e.numeric||hasmax||hasmin)
                {
                    var num=isNum(e.value);
                    var v=(num)?parseFloat(e.value):0;
                    if(!num||(hasmin&&v<e.min)||(hasmax&&v>e.max))
                    {
                        errors += '- the Field '+e.name+' must be a number';
                        if (hasmin)
                            errors += ' that is greater than ' + e.min;
                        if (hasmax&&hasmin)
                            errors += ' and less than '+e.max;
                        else if (hasmax)
                            errors += ' that is less than '+e.max;
                            errors+='.\n';
                    }
                }
            }
            
            // Check radio/checkbox buttons     
            if (e.type=="checkbox" || e.type=="radio")
            {
                // if this radio group isn't checked yet, set to 0
                // in the empty_radio array
                if (!e.checked && empty_radio[e.name]!=1) {
                    empty_radio[e.name] = 0;             
                    continue;
                // if it's checked, set to 1
                } else if (e.checked) {
                    empty_radio[e.name] = 1;
                    continue;
                }
            
            }
			if(e.type=='select-one')
			{
				if(e.value == 'select')
				{
					empty_fields += "\n    " + e.name;
				}
			}
            //alert(e.type)
 
        }
    }
 
    // Loop and check if any radio buttons or
    // check boxes were left empty
    for (name in empty_radio) {
        if (empty_radio[name]==0) {
            empty_fields += "\n    " + name;
        }
    }
 
    if (!empty_fields&&!errors)
    return true;
 
    msg+='The form was not submitted because of the following Errors:\n\n';
    if(empty_fields)
    {
        msg+='- The following Fields are empty:'+empty_fields+'\n';
        if (errors)
            msg+='\n';
    }
    msg+=errors;
    alert(msg)
    return false;
}