var http_request = false;
   function makePOSTRequest(url, parameters) {
	  
	 
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('post', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
	 
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
			
            document.getElementById('showcase_sorting').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   


//////////////////////////////////////////////////////////////////
 function get(id) {
	
      var getstr;
	  /////////////////for industry
 if(id=='i')
 {
         var len=document.indus_form.indus.length ;	
		 var m=0;
		for(var x=0;x<len;x++)
		{
				if(document.indus_form.indus[x].checked)
				{
					
						if(m==0)
						{
							getstr="&qry_data=";
						getstr+=document.indus_form.indus[x].value;
						}
						else
						{
							
						getstr+=","+document.indus_form.indus[x].value;
						}
						m++;
						
				}
				
							
				
		}
		
 }
 if(id=='t')
 {		
		 /////////////////for technology
	 
         var len=document.tech_form.tech.length ;	
		 var m=0;
		for(var x=0;x<len;x++)
		{
				if(document.tech_form.tech[x].checked)
				{
					
						if(m==0)
						{
							getstr="&qry_data=";
						getstr+=document.tech_form.tech[x].value;
						}
						else
						{
							
						getstr+=","+document.tech_form.tech[x].value;
						}
						m++;
						
				}
				
				  
		}
		
 }
      
      makePOSTRequest('showcase.php','type='+id+getstr);
}