function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}






function checkvalues() {
        
        /* Get value entered by user and strip ld/tr spaces*/
        plant=document.plants.plant.value;
        plant=trim(plant);
        document.plants.plant.value=plant;
	
	
	len=document.plants.search.length;
	var flag=0;
	for (var i=0; i<len; i++){
		if (document.plants.search[i].checked)  { flag=1;}
		}
	
        /* Check that something was entered if not show error and return false
*/

	if (flag==0) {alert("Please check either Scientific or Common Name to search the database!");
                return false;
        }
	
        if(plant=="") {
                alert("Please type the plant name in plant name field!");
                return false;
        } else {

        /* If something entered check field for invalid characters, in this
case must */
        /* be alpha numeric N.B note the last parameter of 0 indicating check
is not */
        /* case sensitive */

                if ((validvalue(plant,"abcdefghijklmnopqrstuvwxyz1234567890 ,.'/-",0))&&(validvalue(sname,"abcdefghijklmnopqrstuvwxyz1234567890,.'/-",0))) {                                                
                       /* All okay so submit form */
                        document.form.submit();
                        return true;
                } else {
        
                        /* Invalid characters in field so show alert box and return false
*/              
                        alert("Invalid characters for plant name in the plant name field!");
                        return false;
                }
        }
}
/*
========================================================================
============== */
/* Function to strip leading and trailing spaces from value (similar to
Java trim method) */
/*
========================================================================
============== */
/* Input is string to be trimmed and return value is the result after
trimming */

function trim(value) {

        /* Strip leading spaces from input */
        startposn=0;
        while((value.charAt(startposn)==" ")&&(startposn<value.length)) {
                startposn++;
        }
        if(startposn==value.length) {
                value="";
        } else {

                /* If anything left of string after stripping leading spaces strip
trailing */
                /* spaces as well */
                value=value.substring(startposn,value.length);
                endposn=(value.length)-1;
                while(value.charAt(endposn)==" ") {
                        endposn--;
                }
                value=value.substring(0,endposn+1);
        }
        return(value);
}

/* ====================================================================
*/
/* Function to check that field value doesn't contain spaces or numbers
*/
/* ====================================================================
*/
/* Inputs are the string to be checked, the characters to be allowed and
flag value indicating */
/* if check on letters is to be case sensitive, where 1 inidcates it is
case sensitive */
/* Return code is true is field value is valid, false if not. */
function validvalue(value,validchars,casesensitive) {

        /* If not case sensitive then convert both value and valid */
        /* characters to upper case */
        if (casesensitive!=1) {
                value=value.toUpperCase();
                validchars=validchars.toUpperCase();
        }

        /* Go through each character in value until either end or hit an
invalid char */
        charposn=0;
        while
((charposn<value.length)&&(validchars.indexOf(value.charAt(charposn))!=-
1)) {
                charposn++;
        }

        /* Check if stop was due to end of input string or invalid char and set
return code */
        /* accordingly */
        if (charposn==value.length) {
                return(true);
        } else {
                return(false);
        }
}

function valifyTextField(formPassed) {
	if (formPassed.plant.value == "") {
		alert ("Your must enter a plant name for searching !");
		formPassed.plant.focus();
		return false;
		}
	plant=formPassed.plant.value;
	plant=trim(plant);
	formPassed.plant.value=plant;
	if (validvalue(plant,"abcdefghijklmnopqrstuvwxyz1234567890 ,.'/-",0)) {        
                       /* All okay so submit form */
                        formPassed.submit();
                        return true;
                } else {
 
                        /* Invalid characters in field so show alert box and return false*/ 
                        alert("Invalid characters for plant name in the plant name field!");
                        return false;
                }
			
	}
		

/*
function valifyTextField() {
	plant=document.plants.plant.value;
        plant=trim(plant);
        document.plants.plant.value=plant;	
	
	if (validvalue(plant,"abcdefghijklmnopqrstuvwxyz1234567890 ,.'/-",0)) {        
                       /* All okay so submit form */
                        document.plants.submit();
                        return true;
                } else {
 
                        /* Invalid characters in field so show alert box and return false*/ 
                        alert("Invalid characters for plant name in the plant name field!");
                        return false;
                }
			
	}
*/