function popen (url,hauteur,largeur) {
	 var topof=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
    window.open(url,"NewWin","top="+topof+",left="+left+",width="+largeur+",height="+hauteur+",scrollbars=no,resizable=no");
 }
 
 function popen2 (url,hauteur,largeur) {
 	 var topof=(screen.height-hauteur)/2;
 	var left=(screen.width-largeur)/2;
     window.open(url,"NewWin","top=0,left=0,width="+largeur+",height="+hauteur+",scrollbars=1,resizable=1, menubar=0, status=0, location=0, toolbar=0");
 }
 
 function popen_proposal (proposal_id) {
 	var largeur=640;
 	var hauteur=600;
	var topof=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;

     window.open("proposal_details_fr.php?proposal_id="+proposal_id,"NewWin","top="+topof+",left="+left+",width="+largeur+",height="+hauteur+",scrollbars=yes,resizable=no");
 }
 
 function popen_resizable (url,hauteur,largeur) {
 	 var topof=(screen.height-hauteur)/2;
 	var left=(screen.width-largeur)/2;
     window.open(url,"NewWin","top="+topof+",left="+left+",width="+largeur+",height="+hauteur+",scrollbars=yes,resizable=yes");
 }