<!--

function trim(varString){

	var strTemp = varString.toString();
		
	if(strTemp.indexOf(" ") >= 0){
	
		// Left Trim
		for (i=0; i < strTemp.length; i++) {
			if(strTemp.charAt(i) == " "){
				strTemp = strTemp.substring(i + 1);
			}
			else{
				break
			}
		}
		
		// Right Trim
		for (i=strTemp.length - 1;  i >= 0; i--) {
			if(strTemp.charAt(i) == " "){
				strTemp = strTemp.substring(0, i);
			}
			else{
				break
			}
		}
	}
	
	return strTemp
}

function IsValidEmail(strEmail) {

	invalidChars = " /:,;"

	if (strEmail == "") {
		return false;
	}

	for (i=0; i<invalidChars.length; i++) {
		badChar = invalidChars.charAt(i)
		if (strEmail.indexOf(badChar,0) > -1) {
			return false;
		}
	}
		
	atPos = strEmail.indexOf("@",1)
	if (atPos == -1) {
		return false;
	}

	periodPos = strEmail.indexOf(".",atPos)
	if (periodPos == -1) {
		return false;
	}

	if (periodPos + 3 > strEmail.length) {
		return false
	}

	return true;
	
}

function PhotoWindow(ProductID, PhotoID){
	
	var posX = 200;
	
	window.open("product_photo.php?l="+ ProductID +"&p="+ PhotoID, "PhotoWindow","height=380,width=436,left="+ posX +",top=100,toolbar=0,scrollbars=0,resizable=yes");
}

function SQLInjection(strText) {

	var	arrBadChars = new Array("&", "'", "\"", "+", ",", "(", ")");

	for (i=0; i < arrBadChars.length; i++) {
		if (strText.indexOf(arrBadChars[i], 0) > -1) {
			return true
			break;
		}
	}
	return false
}
	
function LogIn(){

	var intError = 0;
	var strErrorMsg = "Login could not be processed.\n";
						
	if(document.frmLogin.txtUsername.value.length == 0){
		intError++; 
		strErrorMsg = strErrorMsg + intError +") Please enter your username. \n";
	}

	if(document.frmLogin.txtPassword.value.length == 0){
		intError++;
		strErrorMsg = strErrorMsg + intError +") Please enter your password. \n";
	}
	
	if(SQLInjection(document.frmLogin.txtUsername.value)){
		intError++; 
		strErrorMsg = strErrorMsg + intError +") Username contains invalid characters. \n";
	}

	if(SQLInjection(document.frmLogin.txtPassword.value)){
		intError++;
		strErrorMsg = strErrorMsg + intError +") Password contains invalid characters. \n";
	}
	

	if (intError == 0){
		document.frmLogin.hidAction.value = "login";
		document.frmLogin.submit();
	}
	else{
		alert(strErrorMsg);
	}

}


/*
 IsDate Procedure
 This function determines if the date is valid and has been entered in dd/mm/yy
 form. This ensures that the date can be converted to Medium Date
 format on the server without any problems.
*/

function IsDate(strDate){

	var blnResult = true;

	// check that the string is at least 6 characters long ie. 1/1/03.		
	if (strDate.length < 6){ 
		blnResult = false;
	}
	else{
		// check that there are 3 values separated by forward slashes.
		var arrDate = strDate.split("/")
	
		if(arrDate.length != 3){ 
			blnResult = false;
		}
		else{
			// check that each of the 3 values are numeric
			for (i = 0; i <= 2; i++){
				if(isNaN(arrDate[i])){
					blnResult = false;
				}
				else{
					/*
					 check that the month (array element 1) is between 1 and 12
					 and the days (array element 0) do not exceed the number of days in the month
					 */
					if (i == 1) {	// Jan, Mar, May, July, Aug, Oct, Dec
						if (arrDate[i] == 1 || arrDate[i] == 3 || arrDate[i] == 5 || arrDate[i] == 7 ||
							arrDate[i] == 8 || arrDate[i] == 10 || arrDate[i] == 12){
							if(arrDate[0] < 1 || arrDate[0] > 31){
								blnResult = false;
							}
						}			// Apr, Jun, Sep, Nov
						else if(arrDate[i] == 4 || arrDate[i] == 6 || arrDate[i] == 9 || arrDate[i] == 11){
								if(arrDate[0] < 1 || arrDate[0] > 30){
									blnResult = false;
								}
						}
						else if (arrDate[i] == 2){ 		// Feb
							
							if (arrDate[2] % 4 == 0){ 	// leap year
								if(arrDate[0] < 1 || arrDate[0] > 29){
									blnResult = false;
								}
							}
							else{ 						// non leap year
								if(arrDate[0] < 1 || arrDate[0] > 28){
									blnResult = false;
								}
							}
						}
						else{
							blnResult = false;
						}
					}
				}
			}
		}
	}
	return blnResult;
}


function Search(){
	
	if(document.frmSearch.txtSearch.value == ""){
		alert("Please enter the word(s) you would like to search for.");
		return false;
	} else {
		return true;
	}

}
// -->