/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   
		   return false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		  
		   return false;
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		
		    return false;
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		  
		    return false;
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    
		    return false;
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    
		    return false;
		 }
		
		 if (str.indexOf(" ")!=-1){
		   
		    return false;
		 }

 		 return true;					
	}


function formCheck(formobj){
	// Enter name of mandatory fields
	var fieldRequired = Array( "Last_name", "First_name", "email", "Student_id", "Major", "Street_address", "City", "State", "Zip_code", "Signature", "Date");
	// Enter field description to appear in the dialog box
	var fieldDescription = Array("Last_name", "First_name", "email", "Student_id", "Major", "Street_address", "City", "State", "Zip_code", "Signature", "Date");
	// dialog message
	var alertMsg = "Please complete the following fields:\n";
	
	var l_Msg = alertMsg.length;
	
	var obje=formobj.email;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type)
			{
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == "")
				{
					
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				else if (alertMsg.length == l_Msg)
				{
					if(echeck(obje.value)==false)
					{
					 alterMsg="Please entry valid E-mail address.";
					 alert("Please entry valid E-mail address.");
					formobj.email.focus();
					return false;
				
					 }
					 if(isNaN(formobj.Student_id.value)) 
    					{ 	
     					alertMsg = "Only numbers are allowed at Student ID field."; 
     					alert("Only numbers are allowed at Studnet ID field.");
     					formobj.Student_id.focus();
 						return false;
    				    }
   					if(isNaN(formobj.Zip_code.value)) 
   					{ 
     					alertMsg = "Only numbers are allowed at Zip Code field.";
     					alert("Only numbers are allowed at Zip Code field."); 
     					formobj.Zip_code.focus();  
     					return false; 
   					}

		
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1)
				{
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				else if (alertMsg.length == l_Msg)
				{
					if(echeck(obje.value)==false)
					{
					 alterMsg="Please entry valid E-mail address.";
					 e_Msg=alertMsg.length;
					 
					 alert("Please entry valid E-mail address");
					formobj.email.focus();
					return false;
				
					 }
					 if(isNaN(formobj.Student_id.value)) 
    					{ 
     					
     					alertMsg = "Only numbers are allowed at Student ID field."; 
     					alert("Only numbers are allowed at Studnet ID field.");
     					formobj.Student_id.focus(); 
 						return false;
    				    }
   					if(isNaN(formobj.Zip_code.value)) 
   					{ 
     					alertMsg = "Only numbers are allowed at Zip Code field.";
     					alert("Only numbers are allowed at Zip Code field."); 
     					formobj.Zip_code.focus();  
     					return false; 
   					}
					
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null)
				{
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				
				break;
			default:
			}
			if (obj.type == undefined)
			{
				var blnchecked = false;
				for (var j = 0; j < obj.length; j++){
					if (obj[j].checked)
					{
						blnchecked = true;
					}
			}
				if (!blnchecked){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}
  	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}

			
		if(alertMsg.length == l_Msg)
		{
		alert(alertMsg);
		return false;	   		

		}
		else 
		return true;	
	
}
// -->