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function getData(table,dimensions,measures,aggr){
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	var ajaxRequest;  // The variable that makes Ajax possible!
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	try{
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		// Opera 8.0+, Firefox, Safari
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		ajaxRequest = new XMLHttpRequest();
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	} catch (e){
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		// Internet Explorer Browsers
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		try{
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			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
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		} catch (e) {
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			try{
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				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
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			} catch (e){
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				// Something went wrong
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				alert("Your browser broke!");
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				return false;
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			}
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		}
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	}
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	// Create a function that will receive data sent from the server
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	ajaxRequest.onreadystatechange = function(){
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		if(ajaxRequest.readyState == 4){
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			var mydata = null;
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			mydata = JSON.parse(ajaxRequest.responseText);			
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			renderTable(mydata);	
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		}
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	}
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	//var infotype = document.getElementById('infotype').value;
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	var queryString = '';
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	for(var i = 0; i < dimensions.length; i++){
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		if(i!=0)
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			queryString += ';';
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		queryString += dimensions[i];
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	}
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	queryString += "&measures=";
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	for(var i=0; i< measures.length; i++) {
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		if(i!=0)
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			queryString += ';';
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		queryString += measures[i];
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	}
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	queryString = '?com=read&aggregation='+aggr+'&facttable='+table+'&dimensions='+queryString;
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	ajaxRequest.open("GET", "ajaxRouter.php"+queryString, true);
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	ajaxRequest.send(null); 
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}
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//ajax function for each time a new measurement is selected
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function ajaxgetMeasurement(table,value,xAxis){
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	var ajaxRequest;  // The variable that makes Ajax possible!
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	try{
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		// Opera 8.0+, Firefox, Safari
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		ajaxRequest = new XMLHttpRequest();
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	} catch (e){
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		// Internet Explorer Browsers
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		try{
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			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
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		} catch (e) {
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			try{
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				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
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			} catch (e){
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				// Something went wrong
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				alert("Your browser broke!");
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				return false;
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			}
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		}
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	}
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	// Create a function that will receive data sent from the server
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	ajaxRequest.onreadystatechange = function(){
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		if(ajaxRequest.readyState == 4){
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			var mydata = JSON.parse(ajaxRequest.responseText);				
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			renderChart(mydata);	
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		}
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	}
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	//var infotype = document.getElementById('infotype').value;
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	var queryString = "?table=" + table + "&x=" + xAxis + "&y=" + "myseries" + "&measurement=" + value;
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	ajaxRequest.open("GET", "test.php" + queryString, true);
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	ajaxRequest.send(null); 
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}
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