[Cyberpops]

The point is, that full JS looks like as such:

function price() {
 var frm=document.dsd_form;
 var a=frm.conPrice;
 var b=frm.OverP;
 
 var max = <?php echo json_encode($max); ?>;  
 var min = <?php echo json_encode($min);?>;
 var price = <?php echo json_encode($price);?>;

 for (counter=(min.length / 2); counter<(min.length + 1); counter++){
		
		if(a.value >= min[counter]){
			if(a.value <= max[counter]){
				b.value=min[counter]+ " " + max[counter] + " " + price[counter];
			}
			else{b.value = 0;}
		}
	}
}

so, writing a number into conPrice input field, I want OverP field to change its value to a price following a logical statement.