function validate(field) {
var valid = "0123456789-() "
var ok = "yes";
var temp;
for (var i=0; i<field.value.length; i++) {
temp = "" + field.value.substring(i, i+1);
if (valid.indexOf(temp) == "-1") ok = "no";
}
if (ok == "no") {
  return 1;
   }
if (!(exists(field.value))) {
  return 1;
   }
}

function exists(userEntry) {

  var aCharExists = 0;
  var entry=userEntry;

  if(entry) {
     for (var i=0; i<entry.length; i++) {
       if (entry.charAt(i) !="") {
         aCharExists=1;
       }
     }
  }

  if(!aCharExists) {
  return 0;
  }

  return 1;
}

function isLongerThan11(field) {
	if (field.substr(0,7) == 'http://') {
		if (field.length < 11) {
			return 0;
		}
	}
	else {
		if (field.length < 4) {
			return 0;
		}
	}
	return 1;
}

function isChecked(field) {
	if (field.checked) {
		return 1;
	}
	return 0;
}

function multiSelectCheck(field) {
	var selectCount = 0;
	
	for (var i = 0; i < field.length; i++) {
	      if (field.options[i].selected == true) {
	         selectCount++;
	      }
   	}
		
	if (selectCount > 5) {
		return 0;
	}
	return 1;
}

function multiSelectCheck3(field) {
	var selectCount = 0;
	
	for (var i = 0; i < field.length; i++) {
	      if (field.options[i].selected == true) {
	         selectCount++;
	      }
   	}
		
	if (selectCount > 3) {
		return 0;
	}
	return 1;
}

//////////////////////////////////////////////////////////////////////
// validateForm() function:
// Validates input of entire form.
//////////////////////////////////////////////////////////////////////


  
 function validateUpload() {
      
      	var fixThis = "";
      
      	if(!(exists(document.addregistration.name.value))) {
  	  	fixThis += "Please input your Name.\n"
    	}
      	
      	if(!(exists(document.addregistration.emailaddress.value))) {
	  	fixThis += "Please input a valid Email Address.\n"
    	}
    	
    	if(!(exists(document.addregistration.password.value))) {
	  	fixThis += "Please enter a Password.\n"
    	}

    	if(!(exists(document.addregistration.passwordcheck.value))) {
	  	fixThis += "Please confirm the Password.\n"
    	}
    	
    	if(!(document.addregistration.password.value == document.addregistration.passwordcheck.value)) {
	   	  	fixThis += "The passwords you entered did not match.\n"
      	}
    	
 	
      	if (fixThis !="") {
      	  alert(fixThis);
      	  
      	} else {
      	   
      	   document.addregistration.submit();
      	}
  }
  
  
  function validateLogon() {
  
  	var fixThis = "";
  	
  	if(!(exists(document.logon.email.value))) {
	  	  	fixThis += "Please enter your email address.\n"
    	}
    	
    	if(!(exists(document.logon.password.value))) {
		  	  	fixThis += "Please enter your password.\n"
    	}
     
        if (fixThis !="") {
          alert(fixThis);
           	  
        } else {
           	   
          document.logon.submit();
        }
  }