prefix = "https://ems.netexsoftware.com/ems";

function isXMLHttpEnabled() {
        var success = false;
		try {
            var xml = new XMLHttpRequest();
			success = true;
        } catch (e) {
            var MSXML_XMLHTTP_PROGIDS = new Array(
                'Microsoft.XMLHTTP',
                'MSXML2.XMLHTTP.5.0',
                'MSXML2.XMLHTTP.4.0',
                'MSXML2.XMLHTTP.3.0',
                'MSXML2.XMLHTTP'
            );
            
            for (var i=0;i < MSXML_XMLHTTP_PROGIDS.length && !success; i++) {
                try {
                    xml = new ActiveXObject(MSXML_XMLHTTP_PROGIDS[i]);
                    success = true;
                } catch (e) {}
            }
			
        }
		
		return success;
}

function createXMLHttp() {
        var success = false;
		var xmlhttp = null;
        try {
            xmlhttp = new XMLHttpRequest();
			success = true;
        } catch (e) {
            var MSXML_XMLHTTP_PROGIDS = new Array(
                'Microsoft.XMLHTTP',
                'MSXML2.XMLHTTP.5.0',
                'MSXML2.XMLHTTP.4.0',
                'MSXML2.XMLHTTP.3.0',
                'MSXML2.XMLHTTP'
            );
            
            for (var i=0;i < MSXML_XMLHTTP_PROGIDS.length && !success; i++) {
                try {
                    xmlhttp = new ActiveXObject(MSXML_XMLHTTP_PROGIDS[i]);
                    success = true;
                } catch (e) {}
            }
			
            /*
            if ( !success ) {
                alert('Cant create XMLHttpRequest - not supported');
            }
            */
        }
		//return success;
		return xmlhttp;
}	

function callInProgress(xmlhttp) {
/****************************************************************
	Checks the ready state of the XML call, and returns true if ready state is 1-3 (busy), and false if 0 or 4 (ready)
****************************************************************/
	
    switch ( xmlhttp.readyState ) {
        case 1, 2, 3:
            return true;
        break;
	
        // Case 4 and 0
        default:
            return false;
        break;
    }
}
function get_jax_content(jax_file, response_function, post_vars){ 
/****************************************************************
jax_file: path to the remote file to run
response_function:  javascript function to send the response to a callback function
		ie: ajax_callback  will actually call ajax_callback(response)
post_vars: if set, this will POST the vars to the jax_file
--------------------------------------------------------------------
ADDS A TIME STAMP TO THE jax_file SO IT WILL NOT BE CACHED
SETS UP A FUNCTION FOR READY STATE 4
CHECKS FOR A CALL IN PROGRESS
SENDS THE CALL
****************************************************************/
	if ((jax_file.substring(0,5) != "http:") && (jax_file.substring(0,6) != "https:")) jax_file = prefix + jax_file;
	
	jax_file = jax_file + "&noCache=" + new Date().getTime()
//	alert ("Open:" + jax_file + ", Target to: " + target_div);// + "type=" + type);
	
	//grab an xmlHttp object
	var xmlhttp = createXMLHttp();
	
	xmlhttp.open("POST", jax_file, true); //open http connection;
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8"); //set content-type header


	xmlhttp.onreadystatechange=function() {
		try{ wait(1); } catch (e) { } //run a wait(1) function if it exists [usually for displaying some kind of animation to let the user know something is going on.
		if (xmlhttp.readyState==4) {
			try{ wait(0); } catch (e) { }
				var function_to_run = response_function + "(xmlhttp.responseText)"; //setup a string with the callback function to run and response var
				eval(function_to_run); //execute the callback function
		}	
	}

	if ( !callInProgress(xmlhttp) ) {
	      if (post_vars!=""){
		  	xmlhttp.send(post_vars);
		  } else {
		  	xmlhttp.send(null);
		  }
	} else {
		try{ wait(1); } catch (e) { }
	}
	
	delete xmlhttp;
}

function get_jax_content2(jax_file, response_function, post_vars, targetId){ 
/****************************************************************
jax_file: path to the remote file to run
response_function:  javascript function to send the response to a callback function
		ie: ajax_callback  will actually call ajax_callback(response)
post_vars: if set, this will POST the vars to the jax_file
--------------------------------------------------------------------
ADDS A TIME STAMP TO THE jax_file SO IT WILL NOT BE CACHED
SETS UP A FUNCTION FOR READY STATE 4
CHECKS FOR A CALL IN PROGRESS
SENDS THE CALL
****************************************************************/
    if ((jax_file.substring(0,5) != "http:") && (jax_file.substring(0,6) != "https:")) jax_file = prefix + jax_file;
    
	jax_file = jax_file + "&noCache=" + new Date().getTime();
//	alert ("Open:" + jax_file + ", Target to: " + target_div);// + "type=" + type);
	
	//grab an xmlHttp object
	var xmlhttp = createXMLHttp();
	
	xmlhttp.open("POST", jax_file, true); //open http connection;
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8"); //set content-type header


	xmlhttp.onreadystatechange=function() {
		try{ wait(1); } catch (e) { } //run a wait(1) function if it exists [usually for displaying some kind of animation to let the user know something is going on.
		if (xmlhttp.readyState==4) {
			try{ wait(0); } catch (e) { }
				var function_to_run = response_function + "(xmlhttp.responseText" + ", '" + targetId + "')"; //setup a string with the callback function to run and response var
				eval(function_to_run); //execute the callback function
		}	
	}

	if ( !callInProgress(xmlhttp) ) {
	      if (post_vars!=""){
		  	xmlhttp.send(post_vars);
		  } else {
		  	xmlhttp.send(null);
		  }
	} else {
		try{ wait(1); } catch (e) { }
	}
	
	delete xmlhttp;
}

function get_jax_content3(jax_file, response_function, post_vars, callbackArgs){ 
/****************************************************************
jax_file: path to the remote file to run
response_function:  javascript function to send the response to a callback function
		ie: ajax_callback  will actually call ajax_callback(response)
post_vars: if set, this will POST the vars to the jax_file
--------------------------------------------------------------------
ADDS A TIME STAMP TO THE jax_file SO IT WILL NOT BE CACHED
SETS UP A FUNCTION FOR READY STATE 4
CHECKS FOR A CALL IN PROGRESS
SENDS THE CALL
****************************************************************/
	if ((jax_file.substring(0,5) != "http:") && (jax_file.substring(0,6) != "https:")) jax_file = prefix + jax_file;
    
	jax_file= jax_file + "&noCache=" + new Date().getTime();
//	alert ("Open:" + jax_file + ", Target to: " + target_div);// + "type=" + type);
	
	//grab an xmlHttp object
	var xmlhttp = createXMLHttp();
	
	xmlhttp.open("POST", jax_file, true); //open http connection;
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8"); //set content-type header


	xmlhttp.onreadystatechange=function() {
		try{ wait(1); } catch (e) { } //run a wait(1) function if it exists [usually for displaying some kind of animation to let the user know something is going on.
		if (xmlhttp.readyState==4) {
			try{ wait(0); } catch (e) { }
				if (!callbackArgs) {
					callbackArgs = [];
				}
				callbackArgs.unshift(xmlhttp.responseText);
				response_function.apply(null, callbackArgs);
		}	
	}

	if ( !callInProgress(xmlhttp) ) {
	      if (post_vars!=""){
		  	xmlhttp.send(post_vars);
		  } else {
		  	xmlhttp.send(null);
		  }
	} else {
		try{ wait(1); } catch (e) { }
	}
	
	delete xmlhttp;
}

function getFormValues(fobj,valFunc,excludeList,noBlank){
/****************************************************************
loops through all the elements of a form and gathers the values to create
a postvar string.  Existing Element Gathering from text fields, hidden fields, and single value selects
****************************************************************/
       if (!fobj) return "";

		var str = "";
       var valueArr = null;
       var val = "";
       var cmd = "";
	   for(var i = 0;i < fobj.elements.length;i++)
       {
           if (excludeList) 
           {
           		if (excludeList.indexOf(fobj.elements[i].name) >= 0) continue;
           	
           }
       		
       		switch(fobj.elements[i].type)
           {
               case "text":
                    if(valFunc)
                    {
                        //use single quotes for argument so that the value of
                        //fobj.elements[i].value is treated as a string not a literal
                        cmd = valFunc + "(" + 'fobj.elements[i].value' + ")";
                        val = eval(cmd)
                    }
                    if (fobj.elements[i].name) {
                    	if (fobj.elements[i].value == '' && noBlank) break;
                    	str += fobj.elements[i].name +
                    	 "=" + encodeURIComponent(fobj.elements[i].value) + "&";
                    }
                     break;
               case "password":
                    str += fobj.elements[i].name +
                     "=" + encodeURIComponent(fobj.elements[i].value) + "&";
                     break;
               case "hidden":
                    str += fobj.elements[i].name +
                     "=" + encodeURIComponent(fobj.elements[i].value) + "&";
                     break;
               case "select-one":
               		if (fobj.elements[i].selectedIndex>-1 && fobj.elements[i].name) {
               			if (fobj.elements[i].options[fobj.elements[i].selectedIndex].value == '' && noBlank) break;
               			 
           				str += fobj.elements[i].name +
                		"=" + fobj.elements[i].options[fobj.elements[i].selectedIndex].value + "&";
               			
                    } else {
                    	if (fobj.elements[i].name)
                    		str += fobj.elements[i].name + "=&"
                    }
                    break;
                case "select-multiple":
               		for (var j = 0; j < fobj.elements[i].options.length; j++) {
               			if (fobj.elements[i].options[j].selected) {
           					str += fobj.elements[i].name +
                				"=" + fobj.elements[i].options[j].value + "&";
               			}
               		}
                    break;
				case "checkbox":	
					if (fobj.elements[i].checked) {
						if (fobj.elements[i].name) {
							str += fobj.elements[i].name +
                    	 	"=" + encodeURIComponent(fobj.elements[i].value) + "&";
						}
					} else {
						if (fobj.elements[i].name)
							str += fobj.elements[i].name +"=0&";
					}
					break;
				case "textarea":
					str += fobj.elements[i].name +
                     "=" + encodeURIComponent(fobj.elements[i].value) + "&";
                     break;
                case "radio":
					if (fobj.elements[i].checked){
                		str += fobj.elements[i].name +
                     	"=" + encodeURIComponent(fobj.elements[i].value) + "&";
					}
                    break;
           }
       }
       str = str.substr(0,(str.length - 1));
       return str;
}